Troubleshooting on A320 - A340
April 26, 2017 | Author: Zbor Zbor | Category: N/A
Short Description
A320 -A340...
Description
Customer Support Engineering
Presented by
AUFFRET Hervé Indication / Warning / Maintenance System
Trouble shooting philosophy with A320 CFDS / A340 CMS
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. Message Classification © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. TSM Use 6. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 2
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. Message Classification © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. TSM Use 6. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 3
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
MAINTENANCE LEVELS
1st Level
LINE MAINTENANCE
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
No Log-Book complaint Log-Book complaint (Class 1) LRU level only
2nd Level
No Maintenance Action required PFR + System Report / Test + Ref to MMEL
BASE MAINTENANCE / NIGHT STOP
Maintenance status LRU Level
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
PFR (Class 2) + System Report / Test
May 2005
Page 4
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
MAINTENANCE LEVELS
3rd Level
SCHEDULED CHECKS General Class 3 Report + System Report / Test
Class 3 faults LRU Level
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
4th Level
SHOP MAINTENANCE
LRU removal SRU Level
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
Trouble Shooting Data + BITE Shop Memory
May 2005
Page 5
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. Message Classification © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. TSM Use 6. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 6
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
LINE MAINTENANCE CONCEPT: Decision Tree applies MEL NO GO Yes
LOG BOOK
No Crew or Maintenance Observation
Fault on PFR Yes
Carried Forward item
SIL 00-028 / -038/ 041/ -078 •PART A (Fault Msg) •PART B (Cockpit Effect)
TSM EFIS, LOCAL or OBSV Index © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
No
TSM ECAM or CMS Index
FOLLOW TSM PROCEDURE
Maint Action/ LRU Removal
Yes
A/C Return to Service
Spare Available
Yes
Failure Isolated
No A/L Engineering (ACMS Labels)
AIRBUS (TSD, ACMS Labels)
No
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 7
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. Message Classification © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. TSM Use 6. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 8
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
A/C INFORMATION SHARING OPERATIONAL INFORMATION FOR FLIGHT CREW : A/C DISPATCH
MAINTENANCE INFORMATION FOR MECHANIC : A/C TROUBLESHOOTING
AIRCRAFT SYSTEMS Operational failure messages (function lost) :
Maintenance failure messages (LRU lost) :
"Warnings/Malfunctions"
"CMS Fault Messages"
CMC
FWCs
LOG
BOOK POST FLIGHT REPORT
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Warnings/Malfunctions
ECAM or EFIS indications
TSM
Warnings/ CMS Malfunctions Fault
HYDB RSVR LO PRESS -BLUE ELEC PUMP....OFF
or
LOCAL indications
TEST>
FAULT
Fault Isolation Procedures FAULTY LRU
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
associated to Warnings/Malfunctions and CMS Fault Messages May 2005
MCDU
Page 9
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. Message Classification © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. TSM Use 6. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
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TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
MESSAGE CLASSIFICATION MESSAGE CLASS
1
2
3
PRESENTED INDICATION TO THE FLIGHT CREW
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
INDICATION TO THE MAINTENANCE TEAM DISPATCH (MMEL) CONSEQUENCES
Maintenance Status
Any evidence of fault to the flight crew: ECAM Warning, Flag on SD, PFD or ND, Local warnings, System misbehaviour ...
Status light flashing at the end of the flight; Maintenance Status messages on SD STS page, presented only on ground.
POST FLIGHT REPORT
MMEL ENTRY GO, GO IF or NO GO
To be manually issued
MMEL PREAMBLE
MMEL NOT APPLICABLE
GO
600 Hours
UNLIMITED TIME
for time delay, restrictions etc... (See also TSM Introduction)
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
No indication to the flight crew
AVIONIC STATUS
Can be automatically issued at 80 kts + 180 s
REF MMEL HANDLING
NOT PRESENTED
Cockpit Effect
However, correction is recommended to improve the dispatch reliability
May 2005
Page 11
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. Message Classification © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. TSM Use 6. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 12
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
TSM USE TSM LEVEL
ATA CHAPTER LEVEL
General Indexes
ATA SECTION LEVEL
ATA Indexes
TSM Procedure
PB 101
I-ECAM
Fault Symptoms
PB 201
XX-ECAM I-EFIS FAULT ISOLATION
XX-EFIS I-LOCAL © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
XX-LOCAL
PB 301
I-OBSV XX-OBSV
I-CFDS
BLOCK DIAGRAM
XX-CFDS (XX= ATA chapter)
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
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TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
TSM USE : Indexes A320
TROUBLE SHOOTING MANUAL INDEX OF WARNING/MALFUNCTIONS ECAM
PFR ATA TSM ATA CH/SE CH-PB101
A320
EWD WARNINGS
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
A.ICE CAPT AOA HEAT ECAM A.ICE CAPT PITOT HEAT ECAM A.ICE CAPT TAT HEAT ECAM A.ICE F/O AOA HEAT 30-ECAM A.ICE F/O PITOT HEAT ECAML INR WING HI PR A.ICE A.ICE F/O TAT HEAT ECAM ECAM AIR ENG 1 BLEED NOT CLOSED 36-ECAM AIR ENG 1 HPV NOT OPEN 36-ECAM AIR ENG 1 BLEED FAULT ECAM AIR ENG 1 BLEED LEAK ECAM EFF : ALL ENG 2 BLEED NOT CLOSED ECAM 01/94 XXX
30-00
30-
30-00
30-
30-00
30-
30-00 30-00
30-
30-00 30-00
3030-
36-00 36-00 36-00
CFDS MESSAGES
ATA
SOURCE CLASS CH-PB101
ACARS MU (1RB) ACCELEROMETER CFDS ACCLRM 1 12CE1 ACCLRM 1 12CE1 ACCLRM 2 12CE2 ACCLRM 2 12CE2 ACCLRM 3 12CE3 ACCLRM 3 12CE3
232434 ACARSMU 313316 FDIU
1
23-ECAM 2 31-
279216 279216 279216 279216 279216 279216
2 2 2 2 2 2
27-ECAM 27-ECAM 27-ECAM 27-ECAM 27-ECAM 27-ECAM
ADIRU1 ECAM ADIRU1 (1FP1)/GPWC (1WZ) ECAM ADIRU1 (1FP1)/ OVER TEMP CFDS ADIRU1 OR ADIRS CDU ECAM ADIRU1 OR AOA SENSOR 3FP1 ECAM EFF : ALL
341234 ADR 1
1
34-
341234 GPWC
1
34-
341234 ADR 1
2
34-
341234 IR 1
1
34-
EFCS 1 EFCS 2 EFCS 1 EFCS 2 EFCS 1 EFCS 2
36-
I-ECAM36-00 Page 36-00
TROUBLE SHOOTING MANUAL INDEX OF CFDS FAULT MESSAGES
361 36Jan
I-EFIS I-OBSV
I-CFDS 341234 ADR 1
1
27Page 1 Jan 01/94
XXX
I-LOCAL
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 14
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
TSM USE : Fault symptoms
A320 TROUBLE SHOOTING MANUAL AUTO FLIGHT FAULT SYMPTOMS
A320 FAULT ISOLATION C PROCEDURE
CFDS FAULT MESSAGES WARNINGS/MALFUNCTIONS SOURCE
MESSAGE
ATA
EWD WARNING(S)
UBLE SHOOTING MANUAL O FLIGHT FAULT SYMPTOMS FAULT ISOLATION C PROCEDURE
CFDS FAULT MESSAGES SOURCE
MESSAGE
ATA
CFDS MESSAGES
AUTO FLT AP OFF P205
AFS
FMGC 1 (1CA1)
228334
1 22100 T 810 805
AFS
AFS: FAC2/P-B SW 12C 226634
1
226600 P 243 T 810
837
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
22-ECAM EFF : ALL
Page 101 Jan 01/94
XXX
22-CFDS Page 101 Jan 01/94
34-EFIS EFF : ALL
Page 101 Jan 01/94
XXX
22-LOCAL EFF : ALL
22-OBSV Page 101 Jan 01/94
Page 101 Jan 01/94
XXX
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 15
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
TSM USE : Fault isolation A320 TROUBLE SHOOTING MANUAL TASK 21-26-00-810-808 Monitoring Discrete Output to Extract Fan
TASK 21-26-00-810-805
1. Possible Causes - FAN EXTRACT, AVCNS VENT (7HQ) - Wiring between the pin C of the extract fan and the AEVC (2HQ) 2. Job Set-up Information A. Referenced Information REFERENCE
DESIGNATION
AMM 21-26-00-710-803
Operational test of the Avionics-Equipment Ventilation System Removal of the Extract Fan (7HQ) Installation of the Extract Fan (7HQ)
AMM 21-26-51-000-804 AMM 21-26-51-400-804 ASM 21-26/01
3. Fault Confirmation A. Job set-up Get access Open access door 810 B. Test (1) Do the test of the avionics equipment ventilation (Ref. AMM TASK 21-26-00-710-803). 4. Fault Isolation A. If the test gives the maintenance message EXTRACT FAN (7HQ)/AEVC (2HQ) :
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
(1) Do a check to make sure that there is ground at pin C of the extract fan
FAULT CONFIRMATION
FAULT ISOLATION
5. Close-up Close Access
21-26-00 EFF : ALL
Page 213 Jan 01/94
XXX
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 16
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
TSM USE : Task supporting data
A320 TROUBLE SHOOTING MANUAL PCU VALVE BLOCK
A320
EXT
TROUBLE SHOOTING MANUAL FLAPS TASK SUPPORTING DATA
RET functions
FLIGHT WARNING COMPUTER 1 (REF 3-53-00) 26VAC
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
SYSTEM 2
FLIGHT WARNING COMPUTER 2 (REF 3-53-00) 26VAC SYSTEM 2
X INPUTS.
Flap Power Distribution - Block Diagram Figure 306
age shows the synchro angles in decimal and hexadecimal values of the
LH 27-50-00 EFF : ALL
SHOOTING DATA Cs have TROUBLE SHOOTING DATA for a given fault which shows : antennae messages mplementary information, if applicable; The complementary information is
27-50-00
Page 308 Jan 01/94
LL
XXX
Page 308 Jan 01/94
XXX
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 17
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS
AGENDA 1. Maintenance Levels 2. Line Maintenance Concept 3. A/C Information Sharing 4. TSM Use © AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
5. SIL 00-028, 00-038 & 00-041
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 18
TROUBLE SHOOTING PHILOSOPHY WITH A320 CFDS/A340 CMS SIL 00-028 (A320), 00-038 (A340), 00-041 (A330)
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
•
SILs issued to cover BITE deviations
Part A
PFR Failure Messages
Part B
PFR Cockpit Effects
Part C
Class 3 Fault Messages
Part D
CFDS/CMS Anomalies (Interactive Mode)
Part E
AI Envelope Filter
•
PART E covers items (Cockpit Effect and Fault messages) that AIRBUS recommend to filter from the PFR.
•
Purpose: • •
Reduce number of items in the PFR Improve PFR pertinance
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
Page 19
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of AIRBUS S.A.S.. No intellectual property rights are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced or disclosed to a third party without the express written consent of AIRBUS S.A.S. This document and its content shall not be used for any purpose other than that for which it is supplied. The statements made herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supporting grounds for these statements are not shown, AIRBUS S.A.S. will be pleased to explain the basis thereof.
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
AIRBUS, its logo, A300, A310, A318, A319, A320, A321, A330, A340, A350, A380, A400M are registered trademarks.
Troubleshooting with A320 CFDS / A340 CMS - REFERENCE 952.1003/05
May 2005
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A340-500/600 TECHNICAL TRAINING MANUAL ONBOARD MAINTENANCE SYSTEMS A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/ AVIONICS)
This Page Intentionnaly Left Blank
This document must be used for training purposes only
Under no circumstances should this document be used as a reference
It will not be updated.
All rights reserved No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of AIRBUS S.A.S.
This Page Intentionnaly Left Blank
A340-500/600 TECHNICAL TRAINING MANUAL
ONBOARD MAINTENANCE SYSTEMS
Table Of Contents
CENTRAL MAINTENANCE SYSTEM PRESENTATION . . . . . . . . . . . . . 2 CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION . 14 CMS MENUS PRESENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 MENU NORMAL MODE D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 MENU INTERACTIVE MODE D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 MENU SERVICING D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 MENU AVIONICS CONFIGURATION D/O . . . . . . . . . . . . . . . . . . . . . . . 74 MESSAGE D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 MESSAGE PROCESSING D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 BACK UP FUNCTIONS D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 PRINTER PRESENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 PRINTER D/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 UP AND DOWN LOADING SYSTEM PRESENTATION. . . . . . . . . . . . 112 UP AND DOWN LOADING SYSTEM D/O . . . . . . . . . . . . . . . . . . . . . . . 118 ON BOARD MAINTENANCE SYSTEM TEST . . . . . . . . . . . . . . . . . . . . 126 ON BOARD MAINTENANCE SYSTEM LINE MAINTENANCE . . . . . 134 ON BOARD MAINTENANCE SYSTEMS BASE MAINTENANCE . . . 150
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) TABLE OF CONTENTS FWUT200
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A340-500/600 TECHNICAL TRAINING MANUAL
CENTRAL MAINTENANCE SYSTEM PRESENTATION CMS PHILOSOPHY CJanEuNaTrRAyL03M/0A5INTENANCESYSTEMPRESENTATOIN
The Central Maintenance System (CMS) includes the Built-In Test Equipment (BITE) of all electronic systems and two fully redundant Central Maintenance Computers (CMCs). The CMS is used for short term trouble shooting, Line Replaceable Unit (LRU) removal and system failure analysis or test. The CMCs centralize and memorize warnings generated by the Flight Warning Computers (FWCs) and failure messages produced by the aircraft system BITEs. The CMS enables maintenance personnel to perform system operational tests, functional checks and read out of BITE memory through the MCDU. Reports can be printed on-board, saved on a floppy disk via the Multipurpose Disk Drive Unit (MDDU) or transmitted to ground through the Air Traffic Service Unit (ATSU). CMS data can also be loaded into the CMCs through the MDDU.
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION / CMS PHILOSOPHY A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
45 - ONBOARD MAINTENANCE SYSTEMS
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A340-500/600 TECHNICAL TRAINING MANUAL
CENTRAL MAINTENANCE SYSTEM PRESENTATION BITE PHILOSOPHY A system is composed of LRUs which can be: - computers, - sensors, - actuators, - and probes. A function of the system computer is to detect and memorize any failure occurring within the systems, it is called the Built-In Test Equipment (BITE). The BITE memory content of each system is sent to the CMCs.
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION / BITE PHILOSOPHY A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION TESTS A BITE can perform 4 types of test: - POWER UP TEST, which are safety tests, they check the system integrity. They are carried out on the ground after a power cut, - CYCLIC TESTS, which are executed in flight and do not disturb system operation. It is a permanent monitoring of the system, - SYSTEM TESTS, which enable the maintenance staff to check that the systems are safe for flight and enable trouble shooting. They are carried out on the ground, - SPECIFIC TESTS, which are available for some systems. They generate stimuli to various command devices such as actuators or valves. As they have major effects on the aircraft, they are only executed on the ground. SYSTEM TESTS and SPECIFIC TESTS are initiated manually via the CMCs.
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION / TESTS A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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A340-500/600 TECHNICAL TRAINING MANUAL
CENTRAL MAINTENANCE SYSTEM PRESENTATION CENTRAL MAINTENANCE COMPUTER Two CMCs are provided: - number one is active, - and number two is a hot standby. A pushbutton is provided for manual transfer from one to the other. The CMCs continuously scan the buses from the aircraft systems. During flight, if a failure message from a BITE is present on a bus, the CMCs copy and store it. The CMCs also store warning messages generated by the FWCs during flight operation. The CMS operator's interface is the MCDU. Only two of the three MCDUs available can be operated simultaneously.
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION / CENTRAL MAINTENANCE COMPUTER A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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A340-500/600 TECHNICAL TRAINING MANUAL
CENTRAL MAINTENANCE SYSTEM PRESENTATION OPERATION MODES The CMS operates in two modes, a normal mode and an interactive mode. In normal mode, the CMS records fault messages from system BITEs and warnings from the FWCs. In the interactive mode, which is available on the ground only, the CMS allows the operator to retrieve trouble shooting data and to initiate system tests.
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION / OPERATION MODES A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION SYSTEM TYPES The systems are of three different types depending on their complexity. Most of the systems are type 1 systems. Type 1 systems can memorize failures that occurred during the last 64 flights. They are connected to both CMCs by an ARINC 429 output bus and to CMC 1 by an ARINC 429 input bus. This enables on ground trouble shooting and interactive testing of the systems and their components. The type 2 systems only memorize failures from the last flight. The output connection is an ARINC 429 bus. A discrete input allows initiation of the system test. The TYPE 3 systems do not generate failure messages. A discrete output indicates the system status. A discrete input permits initiation of the test or reset.
A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM PRESENTATION / SYSTEM TYPES A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P3000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION FAILURE CLASSES CJanEuNaTrRAyL03M/0A5INTENANCESYSTEMMES AGESPRESENTATOIN
Failures are divided into three classes depending on the effect they have on the flight.
CLASS 1 FAILURE Class 1 failures are the failures which have an operational consequence to the current flight. Some of them are displayed as a warning in real time on the ECAM and available on the MCDU.
CLASS 2 FAILURE Class 2 failures are the failures which have no operational consequence on the current flight. Some affected systems are identified on the ECAM status page. As for class 1 failures, the maintenance team can identify them on the post flight report.
CLASS 3 FAILURES Class 3 failures have neither operational nor safety consequences on the aircraft. They are not indicated to the flight crew during flight. They are only available on ground through the MCDU class 3 report.
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION / FAILURE CLASSES A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P4000000001 01 FWUT200
45 - ONBOARD MAINTENANCE SYSTEMS
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION INTERNAL / EXTERNAL FAILURES Failure messages transmitted to the CMCs can be internal or external.
INTERNAL FAILURES If a failure appears within a system, the BITE will send an internal failure message to the CMCs.
EXTERNAL FAILURES The BITE of each system interfacing with the affected system will send an external failure message to the CMCs.
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION / INTERNAL / EXTERNAL FAILURES A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P4000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION FAILURE MESSAGES STRUCTURE The maintenance messages are all made up of one or several parts. Each part includes the following data : - the name of the suspected component, - its FIN if it is a LRU, - complementary information if necessary.
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION / FAILURE MESSAGES STRUCTURE A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P4000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION TYPES OF MESSAGE Any part is given in one of these five forms depending on the failure reported: An "LRU (FIN)" message appears when: - either the computer declares itself suspect, - or a computer or a system receiving its signals declares the affected computer as suspect. An "LRU (FIN) COMPLEMENTARY INFO" message appears when the suspected computer is generating several signals. The complementary info helps to identify the suspected signal. A "WRG : SIGNAL NAME" message appears when a wiring failure is identified, with the name of the transmitted signal. An "LRU (FIN) SPLY" message appears when an LRU supply loss is identified without ambiguity. Specific messages are used for some faulty situations that would require a too complex BITE to identify the affected LRU. In these cases, only the operator can identify the faulty LRU. The procedure required is in the Maintenance Manual.
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION / TYPES OF MESSAGE A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P4000000001 01 FWUT200
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION AMBIGUOUS / MULTIPLE FAULTS In the case of ambiguous faults, up to three possible failures may be indicated in the most probable order. A "/" sign separates the message parts. In some cases of multiple faults, a BITE may generate a single maintenance message which concerns several defective components. A "+"sign separates the faulty components.
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CENTRAL MAINTENANCE SYSTEM MESSAGES PRESENTATION / AMBIGUOUS / MULTIPLE FAULTS A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P4000000001 01 FWUT200
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CMS MENUS PRESENTATION CMS MCDU MENUS CJanMuSarMEy0NU3/0S5PRESENTATION
The functions are displayed on a ground and a flight menu. The flight menu presents only a part of the ground menu. The CMS menu switches to flight mode, when at least 3 engines are running for 180 seconds with the flight number inserted (or the aircraft speed is above 80 knots). The ground menu comes back during roll-out, when the aircraft speed is below 80 knots for more than 30 seconds.
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CMS MENUS PRESENTATION / CMS MCDU MENUS A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P5000000001 01 FWUT200
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CMS MENUS PRESENTATION FLIGHT LEGS A flight LEG starts at startup of the third engine plus three minutes, if the flight plan is available in the Flight Management System (FMS), or speed higher than 80 knots if the flight plan is not available. At the beginning of a new LEG, the content of the POST FLIGHT REPORT is transferred to the previous flight report memory.
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CMS MENUS PRESENTATION / FLIGHT LEGS A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P5000000001 01 FWUT200
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CMS MENUS PRESENTATION NORMAL MODE In normal mode, the CMCs memorize the fault messages from type 1 and type 2 systems and the fault status from type 3 systems. The three types of system have a different behavior depending on flight phases in the normal mode: - type 1 systems receive CMC data for flight phase synchronization. They memorize failure messages at the start of each flight LEG until 80 knots +30s after touch down. - type 2 systems only memorize failure messages when the aircraft is airborne (i.e. as soon as the landing gear is not compressed). - type 3 systems transmit a permanent signal if they are faulty. In the normal mode, several functions provide aircraft status reports. The CURRENT FLIGHT REPORT function is available on the flight menu. It provides the list of ECAM warnings/cautions and faults related to class 1 and class 2 failures recorded during the current flight. The POST FLIGHT REPORT function is available on the first page of the ground menu. It provides the list of ECAM warnings/cautions and faults related to class 1 and class 2 failures recorded during the last flight. The PREVIOUS FLIGHT REPORT function is available on the first page of the ground menu. It gives the list of the POST FLIGHT REPORTS over the last 63 previous flights.
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CMS MENUS PRESENTATION / NORMAL MODE A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P5000000001 01 FWUT200
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CMS MENUS PRESENTATION / NORMAL MODE A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P5000000001 01 FWUT200
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CMS MENUS PRESENTATION INTERACTIVE MODE The SYSTEM REPORT/TEST function of the ground menu enables access to the interactive mode. In the interactive mode, which is available on the ground only, the CMS allows the operator to retrieve troubleshooting data and to initiate system tests.
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CMS MENUS PRESENTATION / INTERACTIVE MODE A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P5000000001 01 FWUT200
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CMS MENUS PRESENTATION COMPLEMENTARY FUNCTIONS Several complementary functions are available via the MCDU menus. The AVIONICS STATUS function is accessible on both flight and ground menus. It provides a real time list of the systems affected by a fault. The CLASS 3 REPORT function is available on the second page of the ground menu. It provides the list of class 3 faults. The REPORTS PROGRAMMING function allows an automatic print or download of the POST FLIGHT REPORT at engine shut down. The report filter can also be activated from here. The REPORTS FILTERS function allows spurious messages in the flight reports to be filtered. This filter can be inserted either manually via the MCDU or by uploading in the CMCs. The AVIONICS CONFIGURATION REPORTS function manages the inventory of the aircraft computer part numbers and software diskettes. The SERVICING REPORT function provides reports with different parameters which have to be periodically checked and which may induce servicing actions. The UTC/DATE INIT function is accessible on both flight and ground menus. It appears after a long power interrupt of the CMCs. It enables initialization of the backup clock in case of main clock failure.
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CMS MENUS PRESENTATION / COMPLEMENTARY FUNCTIONS A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45P5000000001 01 FWUT200
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MENU NORMAL MODE D/O GENERAL MJanEuNaUrNyO0R3/0M5ALMODED/O
This is the Multipurpose Control & Display Unit (MCDU) menu page which presents the systems connected to the MCDU. From the MAINTENANCE MENU displayed on 2 pages, all the Normal Mode Central Maintenance System (CMS) reports can be shown. These reports will be explained in the following topics, supposing the aircraft on ground and engines shut down.
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MENU NORMAL MODE D/O / GENERAL A340-500/600 T2 MAINTENANCE COURSE (ELECTRICS/AVIONICS) FM45D1F45C60301 01 FWUT200
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MENU NORMAL MODE D/O POST FLIGHT REPORT
topic.
The POST FLIGHT REPORT displays the Electronic Centralized Aircraft Monitoring (ECAM) messages such as WARNINGS/CAUTIONS and MAINTENANCE STATUS messages, and also CLASS 1 and 2 FAULT messages which occurred during the last flight and have been memorized in the Central Maintenance Computer (CMC). It can display a maximum of 64 warnings and 64 faults. The first item of the POST FLIGHT REPORT, are the ECAM messages. The first page contains only one of these messages. If there are several messages, they will be displayed 2 at a time only, on the following pages. In this example, there are 2 ECAM message pages. The ECAM messages are displayed in the order of acquisition by the CMC, minute by minute. The last message memorized is displayed first. If there is no warning, the NO WARNING message will be displayed. From each "warning messages" item page, we can access the first "fault messages" item page by pressing the right arrow key. The first page contains only one message. If there are several messages, they will be displayed 2 at a time only, on the following pages. In this example there are 2 fault message pages.The number of ECAM message item pages and FAULT message item pages is not necessarily the same. The fault messages are displayed in the order of acquisition by the CMC, minute by minute. The last message memorized is displayed first. If there are no failures, the NO FAULT message will be displayed. From each fault message item page, it is possible to go back to the first warning message item page by pressing the left arrow key. In our example, the prompt (
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