A320 Pilot in Command
Upgrade for Microsoft Flight Simulator 2002
COCKPIT Guide Not to be used for real aviation purposes
© 2003 - Wilco Publishing
http://www.wilcopub.com E-mail:
[email protected] [email protected]
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This is general information about the real A320 cockpit. Some items are not functional with A320 PIC
Cockpit overview
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This is general information about the real A320 cockpit. Some items are not functional with A320 PIC
Cockpit overview
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Overhead panel
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Captain's Primary Flight Display (PFD)
1. Flight Mode Annunciator Displays 5 columns 3 lines of flight mode annunciations and messages First column represents Speed Mode Second column represents the vertical mode Third is lateral navigation mode Fourth column indicates the Autopilot’s capability for what concerns the landing phase Fifth indicates the engaged modes of autopilot/flight director. In the first three columns of FMA, any indication displayed in green indicates an active mode, for example ALT indicates the autopilot and/or flight director is in altitude hold mode. An indication in blue is an armed mode (= ready to be activated when all conditions are met). For example the G/S blue indications means that the autopilot is ready to intercept the glide slope. In order to know what mode is engaged, it is vital that the pilot relies on the FMA indications, not on the MCP. This is where he will for sure recognize that the autopilot, flight director and/or autothrust is engaged or not.
PFD Airspeed Indications VMAX Defined by the lower end of a red and black strip along the speed scale. This indicates
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the maximum speed at which the aircraft can be flow. This speed will vary with altitude and atmospheric conditions and is the lowest of VMC ( or MMC ), VFE, or VLE if the landing gear is extended. Computed by the FAC’s.
2.Green Dot Speed Appears while flying in the clean configuration (= with no flaps/slats extended). Represents the best lift-to-drag, as computed by the FAC’s and will be the actual speed at which the pilot will select one step of flaps when decreasing the speed. This also generally corresponds to the holding speed.
Speed Indicators
F - Minimum Flap Retraction Speed - Appears in green next to the minimum speed for selecting position 1 when the FLAPS selector is in position 3 or 2. This also corresponds to the speed at which the pilot will select FLAPS 3 and FLAPS FULL when decreasing the speed towards landing.Computed by the FACs. S - Minimum Slat Retraction Speed - Appears in green next to the minimum speed for selecting position 0 when the FLAPS selector is in position 1 and also corresponds to the speed at which the pilot will select FLAPS 2 when decreasing the speed.. Computed by the FACs. 1 - Decision Speed (V 1) - Appears in blue next to the speed entered by the crew through the MCDU. When out of indication range, appears on upper part of scale. Disappears after lift-off.
3. Actual Airspeed Reference Line Indicates the actual airspeed where the scale value moves in front of the line. Airspeed indication starts from 30 knots.
4. Speed Trend Arrow Starting from the airspeed reference line, points to the speed value which will be attained in 10 seconds if the acceleration remains constant. Appears only when speed difference is greater than two knots. Disappears when speed difference is less than one knot, or if FACs fail.
5. Target Airspeed Pointer Points to the target airspeed value or the airspeed corresponding to the target Mach number. The pointer is magenta when the target airspeed is the value computed by the FMGC in managed speed mode. The pointer is blue when the target airspeed is manually entered on the FMGC or manually entered on the FCU. When the target airspeed is out of the speed tape range, the target speed value is displayed above or below the speed tape in numeric form.
Mach Number Displays when number is greater than .5.
Not displayed when LS (ILS information) is selected. 6. ILS Information
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The following appears when an ILS frequency and course have been selected in the MCDU and when the ILS switch on the EFIS control panel is pushed:
ILS identification as decoded from the ILS receiver. ILS frequency. DME distance if a DME is co-located.
PFD Attitude Indications 7. Fixed Airplane Symbol 8. Pitch Scale Provides graduations between 80° nose up and 80° nose down with 2.5° increments between 10° nose down and 30° nose up.
9. Roll Scale Provides graduations at 0, 10, 20, 30 and 45 degrees of bank.
Side Slip Index / Beta Target Indicates lateral acceleration on the ground and side slip in flight as provided by ADIRS. Reaches stop at .3Gs. The side slip indicator is usefull in flight to maintain coordinated flight (= zero sideslip). In case of engine failure the lower symbol becomes Blue and indicates Beta Target. Beta target is not the same as the side slip indicator as it represents the lowest drag for the initial climb out on one engine. The pilot will use the rudder to center the symbol and this will give him maximum climbing performance in case of an engine failure on takeoff.
10. Glide Slope Deviation Scale Appears when ILS switch is pushed. Flashes continuously when the deviation exceeds one dot for two seconds or more (above 100 feet RA).
11. Target Altitude or Selected FL Indicator Indicates the FCU-selected target altitude or the selected flight level.
12. Altitude Indication Displays altitude in green on a white moving scale. "NEG" appears in window to indicate negative altitude. Window changes from yellow to amber if the airplane deviates from the selected altitude or flight level while a chime will be heard in the cockpit. Numerical value changes from green to amber when the airplane flies below any MDA entered in the MCDU.
13. Barometric Reference Indication Indicates that either STD or QNH has been selected as barometric reference.
PFD Vertical Speed Indications Label 14. Digital Vertical Speed Indication Displays green. Disappears when vertical speed is less than 200 feet per minute. Window surrounding indication becomes amber to indicate inertial data has been replaced by barometric information.
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Analog Vertical Speed Pointer Displays green. If vertical speed exceeds 2000 feet per minute, pointer positions to end of scale. Speed indicators becoming amber if any of the following occur:
Vertical speed exceeds 6000 fpm. Vertical speed exceeds 2000 fpm descent and radio altitude is between 2500 and 1000 feet. Vertical exceeds 1200 fpm descent and radio altitude is less than 1000 feet.
PFD Heading Indications Label 15. Actual Track Diamond Indicates the actual track on the heading scale in green.
Selected Heading or Track Index Points to the selected heading or track on the heading scale.
ILS Course Pointer Appears when an ILS frequency and course have been selected and when ILS switch i s pushed.
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Captain's Navigation Display (ND)
1. Groundspeed and True Airspeed Displays airplane speeds in green as determined by ADIRS.
2. Wind Direction / Speed Displays wind direction and speed with respect to true north in numeric form and wind direction in respect to magnetic north in green arrow form. Dashes indicate no wind data received.
3. TO Waypoint Information
Identification (Tille) - Displays in white. Track To Go (011) - Displays in green. Distance To Go (5.5nm) - Displays in green. Estimated Time of Arrival (05:36) - Displays in green.
Arc Mode Range Marks Displays range scale selected on the EFIS control panel (10 to 320 nm) in white regarding the selection made on the MCP
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Runway Displays selected Runway as oriented runway symbol. Down to scale if range 10, 20 or 40 nm is selected.
Holding Pattern Displays active Holding Pattern.
4.VOR/DME Navaid Displays green if a current waypoint, white if it is the TO waypoint, blue when tuned for display and magenta when not a part of the flight plan but displayed as according to selection/non selection on the FCU.
4. Left/Right Navaid Displays Display the following information for the selected Navaid, the left side for receiver one and the right side for receiver two:
Type of Navaid (ADF in green or VOR in white). Shape and color of the associated bearing pointer. Navaid identification (or frequency if no identification is available). Automatic
identification is provided through the aircraft’s computer.
DME distance if a DME is co-located to the selected VOR. Method of tuning M for Navaid manually tuned through the MCDU o o R for Navaid tuned from an RMP.
5 Airplane Symbol Waypoints Active waypoint displays white, all others green. Others magenta when WPT display selected.
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Primary Engine Display (Engine/Warning Display)
1.Throttle Indication (circle) Displays the predicted EPR or N1 corresponding to the throttle position.
REV Indication Appears is amber when one reverser cowl is not stowed or is unlocked or inadvertently deployed. In flight, REV flashes for 9 seconds and then remains steady. No intentional deployement of reverse shoud be done while the aircraft is flying. The indication changes to green when the doors are fully deployed and revers ers are operational.
2.EGT
Actual EGT Pointer and Indication Displays green. Pulse amber when EGT exceeds 610°C. Pulse red when EGT exceeds 635°C.
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Represented by red line. If 635°C is exceeded, a red mark appears at maximum value reached. It will only disappear at the next takeoff or by Maintenance action.
Maximum EGT Displays amber at 610°C. Not shown during engine start sequence.
1.N1
Actual N1 Pointer and Indication Displays green. Pulse amber when N1 exceeds N1 rating limit. Pulse red when N 1 equals or exceeds 100%.
Maximum Permissible N1 Represented by red line. If 100% is exceeded, a red mark appears at maximum value reached. It will only disappear at the next takeoff or by Maintenance action.
Upper Right Section 3.Thrust Indication (A320 PIC) Graphically displays throttle position. (not present in real aircraft). The 3 green lines indicate the positions corresponding to the clutches in the real thrust levers. From idle, the first position is CLB mode (normal mode for autothrust operation), the second is RTO/MCT (Reduced take-off / maximum continuous thrust, primarily used during either take-off with reduced thrust or during any phase of flight requiring a higher thrust than normal, like for example one-engine flight), the third one corresponding to throttles full open represents TOGA (Take-off or Go Around) mode.
4.Thrust Limit Mode Displays selected status. In flight (or on the ground with engine stopped), the selected mode corresponds to the detent of the most advanced throttle.
Flexible Takeoff Temperature Displays Flexible Takeoff Temperature selected through the MCDUs when FLX mode selected in Take-off page before departure.
5. F.F. Indication Displays Fuel Flow to each engine (pounds per hour).
6.FOB Indication Indicates total fuel on board. An amber half box appears around FOB when quantity shown is not fully usable due to transfer valve failure or loss of center tank pumps.
7.Flap Displays when slats or flaps not fully retracted.
White when selected position is reached. Blue when flaps or slats are in transit. Becomes amber with: Loss of both supplying hydraulic systems, except on ground with both o engines shut down. Blue when flaps or slats are in transit. o
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o o
Application of wing tip brakes. Failure of slats or flaps.
8. S, F Indication Displays green. Becomes amber with:
Loss of both supplying hydraulic systems, except on ground with both engines shut down. Application of wing tip brakes. Failure of slats or flaps.
Actual Position Triangle Displays green. Becomes amber with:
Loss of both supplying hydraulic systems, except on ground with both engines shut down. Application of wing tip brakes. Failure of slats or flaps.
Selectable Positions Display white. Not displayed in clean configuration.
Selected Position Triangle Display blue. Disappears when selected position is reached.
9.Flap Lever Position Display green when selected position (0, 1+F, 1, 2, 3, or FULL) is reached. Zero not displayed when clean configuration is reached. Indication displays blue during transit.
10. Lower Left Section
Memo/Failure Information
Displays memos during normal operation. When system failure is detected, displays independent failure and required action. Once action is performed, displays independent and primary failure. When ECAM CLR key is pushed, previous memo information reappears.
11. Lower Right Section
Memo/Failure Information
Displays memos during normal operation. When system failure is detected, memos remain displayed until the crew performs required action. Once required action is performed, displays secondary failure. When ECAM CLR key is pushed a second time, previous memo information reappears. When ECAM CLR key is pushed a third time, status reminder ("STS") appears.
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Secondary Engine Display (System/Status Display) Selection of the different pages is done by pushing on the corresponding button on the pedestal command panel.
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Engine mode
Screen Left 1.F.USED Indication Displays fuel used as computed by the FADEC. The value is frozen at engine shutdown and is reset at engine start on the ground. The last two digits are dashed if the fuel used indication is inaccurate due to loss of fuel flow for more than one minute.
2.OIL Quantity Indication Displays Oil Quantity in quarts. Represented by pointer and digital display. Indication pulses below 5 quarts (decreasing) or 7 quarts (increasing).
3.OIL Pressure Indication Represented by pointer and digital display. The digital indication pulses if oil pressure exceeds 390 psi (increasing) or 385 (decreasing). Both indications become amber below 80 psi and red below 60 psi.
4.OIL Temperature Indication Displays Oil Temperature in °C. The indication pulses above 156°C (increasing) or 150°C (decreasing). It becomes amber if the temperature exceeds 156°C for more than 15 minutes or instantaneously when above 165°C.
IGN Indication Displays during start sequence. The selected Ignitors "A" or "B" or "AB" are displayed when supplied. Normally, only one at a time should be displayed (alternating on each engine startup). Only when restarting the engine in flight or in case of use of engine antiice is the AB displayed. (exception of a cross-bleed start procedure).
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Start Valve Indication Displays positive of start valve. A horizontal line through the circle signifies the valve is fully open. A vertical line signifies the valve is fully closed.
Engine Bleed Pressure Displays Bleed Pressure upstream from the precooler. The value becomes amber below 21 psi when N2 exceeds 10% with the engine start valve not closed or when Bleed overpressure is detected.
Screen Right 6.VIB Indications Displays N1 and N2 Vibration levels. The indication pulses above 5.0 (advisory warning indication). The data is also displayed on the ECAM cruise page.
OIL Filter Indication Displays Filter status. An amber CLOG message appears in case of excessive pressure loss across the main oil scavenge.
F.Filter Indication Displays fuel Filter status. An amber CLOG massage appears in case of excessive pressure loss across the fuel filter.
Permanent Data - 7. TAT (Total Air Temperature), SAT(Static Air Temperature) & 8. Time & 9.GW (Gross weight) Message Area.
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APU
1. AVAIL displayed in green when APU N is above 99.5 % 2. APU bleed valve position - Valve not closed (green) - Valve fully closed (green) - Valve fully closed (amber) if APU bleed ON 3. APU bleed air pressure. Relative bleed air pressure (green or amber XX when the ADIRS2 is not available or selected OFF). 4. APU GEN line contactor indication. Green if APU GEN line contactor is closed. APU GEN parameters 5. FLAP OPEN. Green when APU air intake flap is fully open (Master switch ON). 6. APU N Displays APU speed in green. Becomes amber when N >= 102 %. Becomes red when N >= 107 %. 7. APU EGT
DOOR Door symbol .Green : door is closed and locked. Amber : door is not locked. Door indication. Amber when the door is not locked.
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SLIDE indication. The "slide" captions of the ECAM door page appear when the slides are armed. To arm the slides, the captain request the cabin crew, via the public address, to set the doors "in flight conditions"", the cabin crew arm the slide of each door and the white ""slide"" captions appear on the ECAM door page. Remark: All doors must be indicated closed before takeoff in order for the aircraft to be pressurized by the pressurization system.
HYD
1. Reservoir quantity. Displayed in green unless the fluid level gets below the warning level (becomes amber in this case). Reservoir LO AIR PRESS. Displayed in amber, and a warning appears on ECAM, if the air pressure for the indicated reservoir drops below normal level. 2. FIRE VALVE. Cross line Amber if the valve is fully closed. In line Green the valve is not fully closed. 3. RAT (Ram Air Turbine). External turbine that can be used in flight in case of emergency to supply partial electrical / hydraulic to the aircraft. White if the RAT is stowed. Green if the RAT is not stowed. 4. PTU control. Green when the power transfer unit (PTU) pushbutton switch is i n AUTO position and the PTU is not transferring pressure. Amber if the PTU pushbutton switch is OFF. Green if PTU is supplying the green hydraulic system. Green if PTU is supplying the yellow hydraulic system. 5. ENG PUMP control and low pressure indication. In line (Green),the pushbutton switch for the designated PUMP is ON and hydraulic pressure is normal. Cross line (Amber). "LO" (Amber) : the pushbutton switch for the designated PUMP i s OFF or the pushbutton switch for the designated PUMP is ON and hydraulic pressure is low.
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6. System pressure. Green, becomes amber when system pressure is below 1450 psi.
LANDING GEAR
1. Landing gear position indicator. Positions are indicated by two triangles for each gear. Each triangle is controlled by a LGCIU (Landing Gear Control and Interface Unit). Landing gear downlocked. green triangle. Landing gear in transit, red triangle. Landing gear uplocked, no triangle. 2. Landing gear door position indication 3. Brake temperature indication
FLIGHT CONTROLS
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1. Spoilers/speed brakes indication (green triangles are displayed when spoilers/speed brakes are extended – displayed amber in case of faulty position – crossed when u/s). 2. Hydraulic system pressure indication. Green, becomes amber if pressure in the hydraulic system gets low. 3. ELAC/SEC indication. Green, amber if a failure appears in the ELAC or the SEC 4. Aileron position indication 5. Aileron and elevator actuator indication "G" and "B" (representing which hydraulic system are in use for that particular control surface) are normally displayed i n green. The color changes to amber in case of low hydraulic pressure, jamming, computer failure, etc). 6. Elevator position indication 7. Pitch trim position indication 8. Yaw control indications
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Multifunction Control Display Unit (MCDU)
The MCDU, Mulifunction Control Display Unit is the heart of the A320. Almost everything that the airbus can do, can be controlled from this unit. Three independent MCDU are present in the cockpit and can be used to control the 2 FMGC (Flight Management and Guidance Computers). Automatic and manual reconfiguration is possible during the flight.
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Line Select Keys Identified as 1L - 6L and 1R - 6R, provide access to the on-side data for the left and right data fields. The keys transfer data from the scratch pad to the line next to key if acceptable to FMGC. If a caret ( < or > ) appears next to the key, selecting the key accesses another MCDU page.
Alphanumeric Keys Enable entry of letters and numbers into the scratch pad. The slash key " / " is used to separate pairs of entries in the same data field.
Function and Mode Keys
Provides access to the DIR TO page which enables the pilot to proceed directly from the present position to a designated waypoint.
Provides access to the PROGRESS page which displays active flight data concerning the flight plan for the phase of flight during which PROG is selected. Allows the crew to update the flight management position and provides bearing and distance to a specified waypoint. Provides access to the PERFORMANCE pages which display the performance parameters for the current phase of flight.
Provides access to the flight plan initialization INIT A and B pages. Used to initialize some preflight FMGC parameters. The INIT B page is only available on the ground prior to engine start. Provides access to the DATA INDEX page, which enables access to a menu for various pages concerning airplane position and status, runways, waypoints, routes and stored data. Provides access to the FLIGHT PLAN pages, which contain a leg-by-leg description of the active flight plan route. Destination and arrival information is also available on applicable flight plan pages. Provides access to the radio navigation (RADIO NAV) which enables navaids display and tuning.
Provides access to the FUEL PRED page for review of fuel and time predictions based on the active flight plan and display of GW / CG and FOB.
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Provides access to the SEC INDEX page which displays a leg-by-leg description of the secondary flight plan route. Destination and arrival information is also available on applicable flight plan pages. Secondary flight plan is a full
programmable route that can be used to quickly switch between flight plans. Currently BLANK
Provides access to the MCDU MENU page, which enables access to systems that use the MCDU for display.
Provides access to the active flight plan page if another page is displayed on the MCDU or, if the F-PLN page is already displayed, the display cycles between the origin and destination. Provides access to additional pages of related information when another page is required to complete data display. This capability is indicated by the additional page arrow on the MCDU page title line. The NEXT PAGE function wraps around from the last page to the first page. Used to scroll the display up and down when pages are longer than the available space on the CRT (indicated by arrows in the last two spaces of the scratch pad). These keys are also used for changing data latitude/longitude) by a set amount when initializing the aircraft position
When pushed, clears messages and data from the scratch pad or an individual data field.
MCDU Page Formats and Colors Page Formats Large Font Entry Represents pilot entries or modifiable data.
Small Font Entry Represents predicted, defaulted, or FMGC-calculated values.
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Line Label Identifies the data displayed directly under this label line (in small font).
Data Line Contains box prompts, dashes, brackets and computer-generated data (displayed in small font), or pilot-entered data (displayed in large font).
Box Prompts (
)
Indicates that data entry is required for minimum FMGS operation. The data is entered via the scratch pad and replaces the box prompts when the associated line select key is pressed. The box prompt entry appears in large font.
Dashes ( - - - - ) Indicates that data entry is not usually required or that data is being calculated by the FMGC. The calculated data will appear in small font.
Brackets ( [ ] ) Indicates that data entry is optional.
Vertical Slew Prompts (
)
Indicates that the latitude/longitude value below the prompts can be increased or decreased. The slew prompts also appear in the last two spaces of the scratch [ad to indicate that the display can be scrolled up or down.
Asterisk ( * ) Indicates that pushing the applicable line select key will change the parameters which affect the airplanes active situation.
Page Prompts ( < or > ) Indicates that another MCDU page is accessible when the associated line select key is pressed.
Overfly Triangle (
)
Appears next to a waypoint identifier on the F-PLN page to indicate that the airplane must overfly the waypoint.
MCDU Colors The MCDU uses extensive colors to convey specific information and to assist in identification and recongnition of various types of data. The colors used on the MCDU are matched with flight plan data that is graphically displayed on the Navigation Display (ND). This provides easy recognition of a particular type of flight plan on either the MCDU or the ND.
BLUE informs the crew that data entry is allowed. Pilot-entered data is shown in large font and FMS-generated data is shown in small font. Blue information includes modifiable/selectable data, entry brackets (no default data exists), missed approach waypoints and active alternate flight plan data.
MAGENTA identifies constraints. Magenta information includes VNAV altitude/speed/ti me constraints that will be met, altitude/speed/time constraint values and climb and descent speed limits.
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GREEN is used for FMS-generated data that is not modifiable such as active flight plan data (except "TO" waypoint and destination data)
AMBER signifies that the item being displayed is important and requires immediate attention. Amber information includes VNAV altitude/speed/time constraints that will be missed, mandatory data, major scratch pad message and "INSERT/ERASE" prompts.
YELLOW indicates a temporary flight plan display.
WHITE is used to display data that clarifies page operations, including page titles, data field labels, dashed data fields (no data available), minor scratch pad messages, secondary flight plan data, active flight plan "TO" waypoint and predictions, active flight plan destination and predictions and page selection/reversion prompts.
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Flight Control Unit (FCU)
FCU Window 1.SPD / MACH Window Displays dashes when the speed/Mach is in m anaged mode (=computed by the FMGC). Displays selected speed from the FCU or pre-selected speed from the MCDU.
2.Managed Speed Light Illuminates to indicate an FMGS managed speed is being flown.
3.Heading / Track Window Displays dashes when LNAV lateral navigation mode is engaged.
4.LAT Light Illuminates to indicate managed lateral mode is either armed or engaged.
5. Flight Director Display Mode Indicates that the flight director is in either HDG V/S or TRK FPA display mode. For the selected navigation mode (either vertically or laterally), the autopilot uses 2 different rules. The first combination uses Magnetic heading for lateral navigation and vertical speed for vertical navigation (in Feet/min). The second set of rules (primarily used for non-precision approaches) uses Track (heading corrected for the wind) and angle of descent (in degrees). FPA means Flight Path Angle.
6. ALT Window Displays altitude selected with the altitude knob. The window never displays dashes, even when VNAV is engaged.
7.LVL / CH Light Illuminates to indicate managed vertical mode is either armed or engaged.
8. V/S / FPA Window Displays the vertical speed or flight path angle selected using the vertical speed/flight path angle knob. The applicable mode is controlled with the HDG-V/S TRK-FPA switch.
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Switches / Knobs left to right 9.SPD / MACH Switch When pushed, changes the value in the SPD/MACH window from indicated airspeed in knots to Mach number, and vice-versa.
10.Speed / MACH Switch When rotated, changes the value displayed in the SPD/MACH window. When pulled, the selected speed displayed in the SPD/MACH window engages. When pushed, FMGS managed speed engages, the managed speed light illuminates and dashes appear in the SPD/MACH window. As a general rule, if a pilots pulls a knob, this means HE takes control in selected mode. If he pushes the same knob, he gives control to the computer, thus being in managed mode.
11.Heading / Track Knob When rotated, changes the value displayed in the HDG/TRK window. When pulled, the selected heading/track displayed in the HDG/TRK window engages. If a heading is selected prior to pulling the knob, the airplane turns in the shortest direction to the selected heading. If a heading is selected after pulling the knob, the airplane turns to the new heading in the direction the knob is turned. If the knob is pulled during a turn, the airplane rolls out on the existing heading. When pushed, LNAV engages, the LAT light illuminates and dashes appear in the HDG/TRK window.
12.LOC Switch Arms, engages, or disengages the LOC mode. It takes a minimum of 3 seconds after arming for the LOC to engage in the capture mode
13.AP Switches Engages/disengage selected autopilot. Illuminate green when the autopilot is engaged.
14.A/THR Switch Arms or deactivates autothrust system. Illuminates green if the autothrust is armed or engaged.
15.Altitude Knob This is composed of 2 different knobs. The outer one selects increments, either 100ft or 1000ft. Then selection is done with the inner knob and this one changes the altitude displayed in the ALT window. When pulled, the open climb or open descent engages. When pushed, VNAV engages and the LVL/CH light illuminates.
16.Metric ALT Switch When pushed, the FCU altitude is displayed in meters on ECAM.
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17.Vertical Speed / Flight Path Angle Knob When rotated, selects the vertical speed or flight path angle displayed in the V/S / FPA window. When the knob is pulled, vertical speed engages. When the knob is pushed, the airplane immediately levels off.
18.APPR Switch Arms, engages or disengages the following modes: LOC and G/S modes if an ILS approach has been selecte d from the MCDU database. APP NAV, FINAL and FINAL APP modes if a non-precision approach has been sele cted from the MCDU database.
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EFIS selection panel
1.Barometric Window Displays Barometric reference.
2.Barometric Selector Provides selection of Barometric reference. The outer knob selects units of reference in inches of mercury (In Hg) or Hectopascals (hPa). The inner knob provide s selection of the reference value displayed in the Barometric window and on the PFD. At airplane powerup, either 1013 hPa or 29.92 In Hg is displayed. When the selector is pulled, the standard Barometric reference setting (1013 hPa/29.92 In Hg) is displayed in the Barometric window and "STD" is displayed on the PFD. Pushing the knob enables selection of a new Barometric reference.
3.FD Switch When pushed, the respective flight director command bars or flight path vector/flight path director is displayed on the associated PFD and the switch illuminates.
4.ILS Switch When pressed, the localizer and glide slope scales are displayed on the PFD and the switch illuminates. Deviation symbols are displayed when a valid ILS signal is being
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received. Hint:
when the ILS switch is pushed, the Mach indication disappears from the Primary Flight Display 5.Data Display Switches (5) Display optional data in addition to the data permanently displayed in the PLAN, ARC and ROSE NAV modes. Only one switch can be activated at a time, The selected switch is illuminates.
6.Mode Selector Provides selection of desired navigation display.
7.Range Selector Provides selection of desired Range on the respective ND. In the event of a mode or Range data failure, the ND defaults to ROSE NAV with an 80 nm Range.
8.VOR/ADF Selector 1&2 Provides selection of VOR and/or ADF bearing pointers and DME on respective ND in any mode except PLAN. Corresponding navaid data characteristics are shown.
A320 Engine Start & Ignition Panel
1.ENG MASTER Switches 1 & 2
ON - LP fuel valve opens, provided the ENG FIRE switch is in. During and automatic start, the HP fuel valve opens, provided the ENG MODE selector is at IGN/START. During a manual start, the HP fuel valve opens, provided the ENG MODE selector is at IGN/START and the ENG MAN START switch is ON.
OFF - Closes the HP and LP fuel valves. Resets both channels of the FADEC.
2.ENG Mode Selector A320PIC
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NORM - Continuous ignition A + B is selected when the engine is running and one of the following is met: FLEX or TO/GA thrust is selected on the ground o TO/GA thrust is selected in flight o o ENG ANTI ICE switch is ON o Engine surge or stall occurs in flight FLAPS lever position is other then "0" in flight o CRANK - The start valve opens provided the ENG MAN START switch is ON and N 2 is less than 10%. Ignition is not supplied. The primary goal of this function
is after an aborted engine start to evacuate the fuel that could remain in the engine in order to avoid a hot start on a second start attempt.
IGN / START - Provides continuous ignition if the ENG MASTER switch is ON and N2 is at idle or greater. During and automatic start, on airplanes placarded :EXTENDED DRY CRANK", expect ignition and fuel flow 50 seconds after ENG MASTER switch is selected ON. On airplanes without the placard, expect ignition and fuel flow between approximately 15% and 20% N2. During a manual start the HP fuel valve is open and ignition is selected when the ENG MASTER switch is selected ON.
3.FIRE Light Illuminates when the respective fire warning is activated and during engine fire test.
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Throttle Controls
Autothrust System The Autothrust System (A/THR), using inputs from the FMGC, controls thrust based on airplane speed, altitude and configuration. The throttles do not move when the AutoThrust System is in use. The system is armed in flight by pushing the A/THR switch on the FCU when the throttles are not in the engagement range.
Throttles Transmit signals to the FADEC, which computes and displays the thrust rating limit and EPR. The throttle can only be moved manually. There are five lever positions define by stops or detents: Reverse Idle, Forward Idle, Climb (CL), Continuous Thrust (FLX/MCT) and TakeOff / Go Around (TO/GA)
AutoThrottle Disconnect Switches ( Red Buttons ) When pressed, disconnects the AutoThrottle system. The engine thrust is then adjusted to a power setting corresponding to the throttle position. If the throttle position are in the CL (normal) detent, then the thrust is commanded to full climb thrust. If the pilot wants lower thrust, he must then move the throttle backwards in a position between Idle and climb detent. Between these 2 detents, the operation of the thrust levers corresponds to the one of a conventional aircraft.
Reverse Levers Select Reverse Thrust by overriding the stop fitted at the FWD IDLE position. The stop is reset when the throttle is selected back to forward thrust.
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Pitch Trim Wheels Provides mechanical control of horizontal stabilizer trim. Trim wheels have priority over electrical control. Use of trim wheels does not disconnect the ELAC’s, as the override mechanism ensures that the computers remain synchronized with the manually selected position. As opposed to conventional aircraft, the pitch trim wheel are never used in normal flight conditions. The flight guidance computer compensate for trim application automatically, so no trimming is required for the pilot. Trim wheels must be utilized when pitch direct law is in effect. Pitch trim is automatically reset to 0 following touchdown as the pitch attitude becomes less than 2.5°.
Trim Position Scales Indicate trim position in degrees. Normal range is marked by a green band.
CG Scales Indicate relation between CG location and pitch trim setting prior takeoff.
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Landing Gear Indicator, AutoBrake, Antiskid & NoseWheel Steering System
1.LDG Gear Lights Display proximity detector information received from LGCIU 1. The LDG GEAR indicator panel does not illuminate when LGCIU 1 is not electrically powered.
UNLK - Illuminate red if the gear is not locked in the selected position. Lights - Illuminate green if the gear is locked down.
2.AUTO/BRK Switches Arm the required deceleration rate. The ON light illuminates blue to indicate positive arming. The DECEL light illuminates green when actual airplane deceleration corresponds to 80% of the selected rate.
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LO - Selected for landing. If the deceleration rate from reverse thrust is not adequate, progressive pressure is applied to the brakes four seconds after ground spoiler deployment to provide a fixed deceleration rate. MED - Selected for landing. If the deceleration rate from reverse thrust is not adequate, progressive pressure is applied to the brakes two seconds after ground spoiler deployment to provide a fixed deceleration rate. MAX - Selected for takeoff. During an aborted takeoff at a speed more than 80 knots, maximum brake pressure is applied when ground spoiler deployment occurs
3.A/SKID & N/W STRG Switch
ON o
If green hydraulic pressure is available: Antiskid is available. Nosewheel steering is available. If green hydraulic pressure is lost: Yellow hydraulic pressure takes over automatically to supply the brakes. Antiskid remains available. Nosewheel steering is lost.
o
OFF o o
o o o
Yellow hydraulic pressure supplies the brakes. Brake pressure must be limited by referring to the triple indicator to avoid wheel locking. Differential braking remains available via the pedals. Antiskid is deactivated. Nosewheel steering is lost.
Landing Gear Selector 4.Landing Gear Lever Provides electrical signals to the two LGCIUs which control the green hydraulic supply.
UP - Retracts landing gear. When the gear doors open, the main wheels are automatically braked by the normal brake system. The nose wheel are stopped by a brake band in the gear well during door closure. When the lever is UP, the hydraulic supply is automatically cut off above 260 KIAS preventing gear extension above the maximum authorised speed. DOWN - Extends the landing gear. The system remains pressurized if green hydraulic pressure is available. An interlock mechanism prevents unsafe retraction by locking the lever in the DOWN position when any gear shock absorber is compressed or the nosewheel steering is not centered.
DOWN Arrow Illuminates red associated with ECAM "GEAR NOT DOWN" warning if the landing gear i s not downlocked with any one of the following:
Radio altitude less than 750 feet and both engine's N1 below 75%. Radio altitude less than 750 feet and Flaps 3 or FULL selected. Flaps FULL selected with both radio altimeters failed
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Brakes & Accumulator Pressure Triple Indicator 5.ACCU PRESS Indication Displays the brake accumulator pressure.
6.BRAKES Pressure Indication Displays the yellow hydraulic system pressure that is supplied to the left and right brakes.
7.Clock CHR Button First push starts Sweep Second Hand and minutes display in the ET/CHR indicator. Second push stops second hand and freezes minutes display. Third push resets second hand to the 12 o'clock position and blanks CHR indicator.
DATE Button Sets the Chronometer in the Date Mode. The date is set by positioning the UTC Selector to HSD (day), MSM (month) and HLDY (year). Return the UTC Selector to the RUN position. Pressing the DATE button again will resume the display of UTC time.
ET Counter Displays elapsed and chronograph time. Chronograph time display has priority over elapsed time.
Sweep Second Hand Indicates Chronometer seconds.
ET Selector
RUN - Starts the elapsed time counter. HOLD - Freezes counter time. RESET - Resets counter to zero.
UTC Selector Sets the time.
RUN - Clock will begin normal operation. HLDY - Hold MSM - Minutes HSD - Hours
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Standby Airspeed Standby Altimeter
1.Standby Airspeed Connected directly to the standby pitot and static source. Airspeed bugs are required equipment but may be deferred if missing.
2.Standby Altimeter Connected directly to the standby static source. Altimeter bugs are required equipment but may be deferred if missing.
Standby Attitude Indicator 3.Attitude Indicator Indication remains available for at least five minutes after total electrical failure.
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Red Flag Flag appears with failure of indicator or power supply.
Caging Knob When pulled, centers and levels the horizon. (Airplane should fly straight and level for this action.)
Digital Distance & Radio Magnetic Indicator (DDRMI) 4.VOR DME Counters Indicate DME distance to the VORs tuned on the RAD NAV or PROG page or RMP.
HDG Flag Appears when the following occur:
ADIRS heading signal is invalid. RMI fails. Power supply fails.
Bearing Pointers
Indicate the Magnetic Bearing to VOR 1. Indicate the Magnetic Bearing to VOR 2 or ADF 1 as selected by the VOR/ADF selectors.
Compass Card Displays the bearing scale. Normally supplied from ADIRU 1.
VOR/ADF Flags Appears when:
Selected VOR or ADF receiver fails. ADIRS heading signal is invalid. RMI fails. Power supply fails.
Associate pointer remains at the valid position.
VOR/ADF Selectors Allows selection of VOR 2 or ADF 1 on the double pointer.
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Radio Management Panel (RMP)
1.Frequency Displays Windows
ACTIVE - Shows the active frequency of the selected radio (which is identified by the illuminated radio selection key). STBY/CRS - Displays the NAV course or standby radio frequency. This frequency is activated by pushing the transfer switch, and is changed by rotating the frequency selector knobs.
2.Transfer Switch (Arrow) When pushed, exchanges the active and standby frequencies, and tunes the new active frequency.
3.Radio Selection Switches (VHF, HF & AM) When pushed, the ACTIVE window displays the tuned frequency and the STBY/CRS
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window displays the Standby frequency.
SEL Indicator Illuminates on both RMPs when a transceiver normally associated with an RMP is tuned by another RMP.
Frequency Selector Knobs Selects the course or standby radio frequency. Displayed in STBY/CRS window. Inner knob controls decimal values.
4.NAV Switch (Guarded) When pressed on RMP 1 or 2, the radio navigation tuning is selected directly through the RMP. Does not interferes with the FMGC except for radio-tuning. Removes auto-tuning from the FMGC and the VOR, ILS and ADF receivers are controll ed by the RMP. The switch illuminates green when pushed. Pushing switch a second time returns control to the FMGC.
5.STBY NAV Selection Switches (VOR, ILS, MLS & ADF) When the NAV switch is selected, enables tuning of the selected navaid via the frequency selector knobs. Each RMP tunes its respective VOR. Tuning an ILS on either RMP tunes both ILS receivers, if both RMPs are in the standby NAV mode. The ADF can only be tuned on RMP 1.
BFO Switch When selected, the Beat Frequency Oscillator mode becomes active, provided the ADF receiver is selected.
6.ON/OFF Switch Controls the power supply to the Radio Management Panel
Audio Control Panel ( ACP ) 7.Transmission Switches When pushed in, selected the associated channel for transmission and the three green lines illuminate. The channel is deselected by pushing the switch again or selecting another channel.
VHF/HF - When pushed, allows communication on applicable transceiver. "CALL" flashes when a SELCAL is received on the applicable radio.
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INT - When pushed, allows communication on the flight interphone system. "MECH" flashes when a call is received from the external service interphone panel. Light goes off after 60 seconds if not reset.
CAB - When pushed, allows communication on the Cabin interphone system or service interphone. "ATT" flashes when a call is received from a Flight Attendant station. Light goes off after 60 seconds if not reset.
PA - Used for PA transmission via boom, oxygen mask or hand mike. The transmission switch must be pressed and held to use the PA system. PA announcements can also be made using the cockpit handset without selecting the PA transmission switch.
Reception Knobs Select reception channels and adjust associated audio levels. When knob is released out, the respective channel is selected and the knob illuminates.
INT / RAD Switch Operates as a press-to-talk switch for boon or oxygen mask microphones.
INT - The interphone is "hot" between cockpit crew members, regardless of the transmission switch selection. The INT knob must be selected for reception.
Neutral - Disconnects microphones from transmission. Reception is normal. RAD - Connects boom or mask microphones to facility selected on the ACP. Spring-loaded to the neutral position.
ON Voice Switch Inhibits ADF and VOR IDENT signals. Switch illuminates when pushed in.
Reset Switch Extinguishes lights in the CALL, MECH and ATT transmission switches.
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Speed Brake, Trim and Flap Lever Panels
1.Speed Brake Speed Brake Lever Lever provides the following speed brake and ground spoiler functions:
Manually pushing lever down and aft inflight, selects surface position of Speed Brakes. A "hard point: is provided at the 1/2 position. Speed Brake deflection is limited to approximately 1/2 with an autopilot engaged, regardless of lever position. Pulling the lever up to the RET position arms the ground spoilers to automatically extend upon landing or when executing a rejected takeoff.
2.Trim RUD Trim Selector Controls the Rudder Trim actuator which moves the neutral point of the articial feel at a rate of 1 degree per second of rudder travel. This switch is primarily used in case of engine failure with the autopilot disengaged. Selector is deactivated with A/P engaged.
RUD Trim Position Indicator Displays Rudder Trim direction (L or R) and value (0° to 20°).
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RUD Trim RESET Switch When pushed, the FAC commands the Rudder Trim actuator to the zero trim position
gradually. 3.Flaps
Flap Lever Commands flaps and slats for simultaneous operation to selected position. Lever must be pulled out of detent prior to positioning. Detents are provided at positions 1 and 3 to avoid excessive flap/slat travel by a single action. When the flap lever is in any position other then "0" in flight, idle RPM is increased (approach idle) and continuous ignition is activated.
Parking Brake & Landing Gears Gravity Extension 4.Parking Brake System Parking Brake Handle Sets the Parking Brake by pulling the handle and then turning it clockwise. Activation of the Parking Brake deactivates all other braking modes. "PARK BRK" is displayed on the ECAM memo page.
5.Landing Gear Gravity Extension System Gravity Gear EXTN Handle Provides Landing Gear extension in the event of electrical, hydraulic or mechanical failure. The handle must be extended and then rotated clockwise three turns to shut off hydraulic pressure, open the doors and unlock the gear.
TCAS/ATC Control Panel
Above/Below Switches
N - Vertical coverage of 2700' Above and Below airplane altitude. Above/Below - Vertical coverage of 9900' Above or Below airplane altitude. Opposite altitude remains 2700'.
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Transponder Code Indicator (Window) Displays current Transponder Code.
1.TCAS/XPDR Selector
STBY - TCAS and the transponders are in the warmup cycle. Message "TCAS STBY" will appear in green on upper ECAM. XPDR - The transponder is ON and TCAS is in the warmup cycle. TA - The ATC/TCAS system is ON and all Proximate Traffic and Traffic Advisory functions of TCAS are operable. Resolution Advisories and vertical guidance function are inhibited. Target symbols will be visible only when a TA is active. TA/RA - The ATC/TCAS system is ON and all Proximate Traffic, Traffic Advisory and Resolution Advisory functions of TCAS are operable. Target symbols will be visible only when a TA or RA is active. TFC - The ATC/TCAS system is ON and all transponder equipped airplanes within 40 nm and the altitude slice selected by the ABOVE/BELOW switch are displayed full time: Other, Proximate, TA and RA traffic.
2.Code Selector Knob Selects TCAS/ATC Code.
ATC Fail Light (red) Indicates a failure of the selected transponder.
3.IDENT Button When a aircraft, during a flight, is handed over to another controller, that controller may request the crew to "IDENT" by saying e.g. "American 590 squawk ident." The crew can push this button which will send a signal to the ground radars and highlight the aircraft on the ATC screen. The controller can then confirm that the target is actually the aircraft he just spoke to.
Transponder Selector
1 - Selects transponder 1 and ADR 1 2 - Selects transponder 2 and ADR 2
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SideStick
ThumbRest Dimple Takeover (Priority) Switch When pressed:
Disconnects autopilot When held in, deactivates the other Sidestick and allows full singular control. Holding switch for more than 30 seconds latches the system, allowing the switch to be released without losing priority. A deactivated stick can be reactivated at any time by momentarily pushing either priority switch.
If the priority switches on both sidesticks are pushed, the last one activated assumes priority. Illuminates Glareshiel d SIDE STICK PRIORITY lights and activates "PRIORITY LEFT" or "PRIORITY RIGHT" audio voice message according to control configuration.
Transmit Switch Operates as a push-to-talk switch for boom or oxygen mask microphones.
Neutral - Boom and mask microphones are di sconnected from transmission, although reception is normal. Switch is spring-loaded to neutral. Transmit - When selected, provides transmission to the facility selected on the ACP transmission switch. If transmit is selected on the sidestick when the ACP INT/RAD switch is set to INT, the transmit function has priority over the interphone function.
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OVERHEAD
Engine / APU Fire Control Panel
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1. ENG 1 & 2 Fire Switches ( guarded ) When released out, an electrical signal:
Cancels aural warning Arms squibs Deactivates generator Closes the following valves o Fuel LP Engine fuel return o Hydraulic bleed o Pack flow control o
ENG 1 & 2 Fire Lights Illuminate independently of the switch position as long as the respective engine fire warning is activated.
2.ENG 1 & 2 Agent 1/2 Switches Arms when the corresponding ENG FIRE switch is released out. SQUIB lights illuminate to facilitate identification of the agent switch to be activated. When the AGENT switch is pushed momentarily:
Bottle is discharged Related DISCH light illuminates
3.ENG 1 & 2 TEST Switches (inop) Test the fire detection and extinguishing system operation.
Activates ECAM ENG FIRE warning Activates continuous chime Illuminates the following: o Flashing MASTER WARN lights ENG FIRE switch o SQUIB lights o DISCH lights o FIRE lights on engine start and ignition panel o
4.APU Fire Switch ( guarded ) When released out:
Cancels aural warning APU shuts down Squib is armed Squib light illuminates Fuel LP valve is closed APU bleed and crossbleed valves are closed APU generator is deactivated
APU Fire Light APU Fire light illuminates independently of switch position when the APU fire warning is activated.
5.APU Agent Switch
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Arms by pushing the APU FIRE switch. SQUIB light illuminates. When the AGENT switch is pushed momentarily:
Bottle is discharged DISCH light illuminates
APU TEST Switch Tests fire detection and extinguishing system operation. Does not cause automatic shutdown of APU.
Activates ECAM APU FIRE warning Activates continuous chime Illuminates the following: Flashing MASTER WARN lights o APU FIRE switch on APU FIRE Panel o SQUIB light o DISCH light o
Hydraulic Control & Fuel Panels
Hydraulic Control Panel 1.ENG 1 & 2 Pump Switch & Light
Switch o o
ON - The Pump Pressurizes the system when the Engine is running. OFF - The Pump is depressurized. Power generation stops.
Light Illuminates amber to indicate: Reservoir low level o o Reservoir overheat o Reservoir low air pressure Pump low pressure o Extinguishes when the ENG PUMP switch is selected OFF, except during an overheat; in which case, the light remains on as long as the overheat is present.
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2.RAT MAN ON Switch ( red Guard ) When pushed, the RAM Air Turbine extends. The RAT extends automatically in flight with a loss of AC buses 1 and 2. 3.Blue ELEC Pump Switch & Fault Light ( Guarded )
Switch AUTO - The Pump is energized, provided AC power is available: In flight On the ground, provided one engine is running or the BLUE PUMP OVRD switch has been pressed. OFF - The Pump is de-energized. o Fault Light - Illuminates amber to indicate: o Reservoir low level Reservoir overheat o Reservoir low air pressure o Pump low pressure o o
Extinguishes when the BLUE ELEC PUMP switch is selected OFF, except during an overheat; in which case, the light remains on as long as the overheat is present. 4.PTU Switch & Fault Light (INOP)
Switch AUTO - The reversible motor pump is armed and both yellow and green electro-hydraulic valves are open. The PTU runs automatically when the differential pressure between the green and yellow systems is more than 500 psi. OFF - Both green and yellow PTU electro-hydraulic valves are energized o and close. Power transfer stops. Fault Light - Illuminates amber to indicate: Green or yellow reservoir overheat o Green or yellow reservoir low air pressure o Green or yellow reservoir low level o o
Extinguishes when the PTU switch is selected OFF, except during an overheat; in which case, the light remains on as long as the overheat is present. 5.Yellow ELEC Pump & Fault Light
Switch ON - The Pump is energized. If electrical power is removed, the pump remains de-energized at the next electrical power application. OFF - The Pump is de-energized. It is automatically energized when the o forward or aft cargo door lever is operated. During cargo door operation, all other yellow system users are inhibited, except for the No. 2 engine thrust reverser and the brake accumulator. Fault Light - Illuminates amber to indicate: Reservoir low level o Reservoir overheat o Reservoir low air pressure o Pump low pressure o o
Extinguishes when the YELLOW ELEC PUMP switch is selected OFF, except during an overheat; in which case, the light remains on as long as the overheat is present.
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Fuel Panel 6.X FEED Switch & Open Light
Switch
OFF - Closes Crossfeed valve. ON - Open Crossfeed valve. ON illuminates white. o Open Light - Illuminates green when Crossfeed valve is fully open. o
7.ENG 1 & 2 L/R TK Pumps Switch & Fault Ligh ts
Switch ON - Energize associated Tank Pump; fuel feeds only when center Tank Pumps' delivery pressure drops below threshold. OFF - Deactivate associated Tank Pump. o Fault Lights - Illuminates amber when the delivery pressure drops. Inhibited when OFF selected. o
CTR TK 1 & 2 Pump Switches & Fault Lights
Switch ON - Activates associated Center Tank Pump. If MAN mode is selected on MODE SEL switch. OFF - Deactivate associated Center Tank Pump. o Fault Lights - Illuminates amber when the associated Pump is operating and delivery pressure drops. o
8.Mode SEL Switch & Fault Lights
Switch AUTO - Center Tank Pumps control is automatic: Pumps operate at engine start for two minutes Pumps operate provided slats are retracted Pumps automatically turn off five minutes after Center Tank low level is reached o MAN - Allows manual control of Center Tank Pumps with CTR TK PUMP switches. Fault Lights - Illuminates amber when Center Tank has more than 550 pounds of fuel and the left or right wing Tank has less than 11,000 pounds. o
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Electrical Control Panel
1.BAT 1/2 Indication Window Display the Battery voltage
2.BAT 1/2 Switches Controls the operation of the corresponding battery charge limiter.
AUTO - The Batteries are automatically connected to the DC BAT bus during the following: APU starting o Battery charging o Below 100 knots on the ground with a loss of AC buses 1 and 2 o OFF - The Battery charge limiter is not operating and the battery line contactor is open. The OFF light illuminates white provided the DC BAT bus is powered. The HOT BAT buses remain powered. Fault Light - Illuminates amber when the charging current for the corresponding battery increases at an abnormal rate. In addition, the battery contactor opens.
3.AC ESS Feed Switch Enables the AC ESS BUS to be powered via AC BUS 2 i nstead of AC BUS 1.
Normal - AC ESS BUS is suppli ed from AC BUS 1. ALTN - AC ESS BUS is supplied from AC BUS 2. Fault Light - Illuminates amber when the AC ESS BUS is not electrically powered.
4.Galley Switch
AUTO - The Galleys are electrically powered. The main Galley bus is automatically shed when only one generator is operating, except on the ground when the APU or external power is available. OFF - The Galleys are not electrically powered. Fault Light - Illuminates amber when any generator load is above 100% of its rated output.
5.IDG 1/2 Switches Guarded and normally spring-loaded out. When pushed, the IDG is disconnected from its drive shaft and can only be reconnected by Maintenance.
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6.GEN 1/2 Switches
ON - The Generator field is energized and the line contactor closes provided electrical parameters are normal. OFF - The Generator field is de-energized and the line contactor opens. The fault circuit is reset. Fault Light - Illuminates amber if a protection trip is initiated by the Generator control unit (GCU), or the line contactor opens without selecting the respective GEN switch OFF.
7.APU GEN Switch
ON - The Generator field is energized and the line contactor closes provided electrical parameters are normal and the EXT PWR line contactor is open. The bus tie contactor (1 and/or 2) automatically closes if generators 1 and/or 2 are not operating. OFF - The Generator field is de-energized and the line contactor opens. The fault circuit is reset. Fault Light - Illuminates amber if a protection trip is initiated by the Generator control unit (GCU), or the line contactor opens without selecting the APU GEN switch OFF. The APU GEN FAULT light is inhibited when APU speed is low.
8.BUS TIE Switch
AUTO - The Bus Tie contactors open or close automatically to maintain power supply to AC buses 1 and 2. One contactor is closed when one engine-driven generator supplies the associated AC bus and the APU generator or external power supplies the other side.
Both contactors are closed in case of one engine-driven generator, or external power supply. OFF - Both Bus Tie contactors are open.
9.EXT PWR Switch When pushed with the EXT PWR AVAIL light illuminated:
External Power line contactor closes AVAIL light goes off ON light illuminates
When pushed with the EXT PWR ON light illuminated:
External Power line contactor opens ON light goes off AVAIL light illuminates
AVAIL Light - Illuminates green provided External Power is plugged in and electrical parameters are normal.
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Air Conditioning & Pneumatic Controls
Air Conditioning 1.PACK Flow Selector Permits selection of Pack Flow according to number of passengers and ambient conditions.
2.Zone Temperature Selectors Adjust Temperature for associated Zone.
3.HOT AIR Switch
ON - Automatically controls zone Hot Air pressure regulating valve. OFF - Closes Hot Air pressure regulating valve and trim air valves and resets fault circuit. Fault Light - Illuminates amber when duct overheat is detected. If this occurs, the zone Hot Air pressure regulating valve and trim air valves automatically close. The FAULT light stay on until ;power temperature is sensed with the switch off.
4.PACK 1/2 Switches
ON - Automatically controls Pack Flow control valve. Valve regulates flow, except in the following conditions: Upstream pressure is below minimum o Compressor outlet overheat o During Engine Start sequence with ENG MODE selector set to IGN/START o or CRANK and: Either ENG MASTER switch is ON The start valve is open N2 is less than 50% Corresponding fire switch is depressed o DITCHING switch is selected ON o OFF - Closes Pack Flow control valve. Fault Light - Illuminates amber when Pack Flow control valve position disagrees with selected position, or if compressor outlet overheats
5.RAM AIR Switch (Guarded) A320PIC
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