ATA 00-03 TSM

Training Manual A 319/320/321 ATA 00-03 Trouble Shooting (TSM) Line & Base Maintenance

ATA Spec. 104 Level 3

Book No:

ALL A319/320/321 00-03 LEVEL 3 E

Lufthansa Technical Training GmbH Lufthansa Base

Issue: JAN. 1998 For Training Purposes Only  Lufthansa 1995

For training purposes and internal use only. Copyright by Lufthansa Technical Training GmbH. All rights reserved. No parts of this training manual may be sold or reproduced in any form without permission of:

Lufthansa Technical Training GmbH Lufthansa Base Frankfurt D-60546 Frankfurt/Main Tel. +49 69 / 696 41 78 Fax +49 69 / 696 63 84 Lufthansa Base Hamburg Weg beim Jäger 193 D-22335 Hamburg Tel. +49 40 / 5070 24 13 Fax +49 40 / 5070 47 46

TABLE OF CONTENTS ATA 00 TROUBLE SHOOTING . . . . . . . . . . . . . . . .

1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MAINTENANCE PHILOSOPHY . . . . . . . . . . . . . . . . . . . . .

2 2

TROUBLE SHOOTING MANUAL (TSM) . . . . . . . . . . . . . . . . . . . . . . . . GENERAL USE OF THE TSM . . . . . . . . . . . . . . . . . . . . . . . INDEX OF WARNINGS/MALFUNCTIONS (I-W/M) . . . . . INDEX OF CFDS FAULT MESSAGES (I-CFDS) . . . . . . . INTRODUCTION (INTRO) . . . . . . . . . . . . . . . . . . . . . . . . . . STANDARD ATA CHAPTERS (21....80) . . . . . . . . . . . . . . .

4 4 6 10 14 16

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TABLE OF FIGURES Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

Post Flight Report (PFR) Example . . . . . . . . . . . . . . . . . . . Intentionally left blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSM Index of Warnings/Malfunctions . . . . . . . . . . . . . . . . I-ECAM Page (Example) . . . . . . . . . . . . . . . . . . . . . . . . . . . TSM Index of CMS Fault Messages . . . . . . . . . . . . . . . . . I-CMS Page (Example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSM INTRO Table of Contents . . . . . . . . . . . . . . . . . . . . . . TSM ATA Chapter Table of Contents . . . . . . . . . . . . . . . . . TSM Fault Symptoms (Page Block 101) . . . . . . . . . . . . . . TSM Fault Symptom Page (Example) . . . . . . . . . . . . . . . TSM Fault Isolation Procedures (Page Block 201) . . . . TSM Block Diagrams (Page Block 301) . . . . . . . . . . . . .

3 5 7 9 11 13 15 17 19 21 23 25

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ATA 00

TROUBLE SHOOTING

For Training Purposes Only

Lufthansa Technical Training

TROUBLE SHOOTING Introduction

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Lufthansa Technical Training For Training Purposes Only


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INTRODUCTION MAINTENANCE PHILOSOPHY General Entry in trouble shooting process is required,when a fault is reported by the flight crew.(warnings/malfunctions) As the CFDS (Centralized Fault Display System ) is the main aid for troubleshooting, the line mechanic has to verify in the PFR ( POST FLIGHT REPORT) if a fault message is correlated to the reported warning/malfunction. This correlation constitutes the fault symptom. A back-up of the printed PFR is available on the MCDU (multipurpose control /display unit) in form of the Last Leg Report and Last Leg ECAM Report. It should only be used if the printed PFR is not available as the presentation is not so friendly. Other reports in the log book, resulting from EIS flags, ECAM SD advisories, local indications or crew observations require an immediate usage of the TSM (Trouble Shooting Manual). In the following the use of the TSM is described. This includes the description of the layout of the TSM. The philosophy of the troubleshooting manual is to guide the trouble shooter from a reported fault ( log book entry, CFDS post flight report, ECAM status, crew observations ) to a correct procedure to isolate the fault.

When you can find a corresponding FAILURE message, you have to report it the log book ( ACTION field ). When there is no FAILURE message in the PFR, you have to report in the log book: ”No CFDS Failure message”. If you use ATA 2126 and the time 1712 in the part ECAM WARNING MESSAGES as a reference, you will find in the part FAILURE MESSAGES ATA 212651 and also the time 1712. The associated FAILURE message runs: ”EXTRACT FAN 18HQ”. Next step of trouble shooting : Confirmation of the ECAM/FAILURE messages. Normally the confirmation is done by a test . Because there are several tests possible for different systems, you have to go first to the TSM to find out, which one is the right one.

Post Flight Report (PFR) Example For example, there has been made the following entry in the log book: ”VENT EXTRACT FAULT”. A copy of the POST FLIGHT REPORT printout is shown on the following page ( FIGURE 1 ). In the part ECAM WARNING MESSAGES you can find conformity with the entry of the log book. A correlation between the ECAM message and a FAILURE message, send by the system BITE of the corresponding system computer, is also possible. The correlation will be done by comparing the ATA chapter and the time (GMT) from ECAM message and FAILURE message. They must correspond.

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TROUBLE SHOOTING TROUBLE SHOOTING MANUAL

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TROUBLE SHOOTING MANUAL (TSM) GENERAL USE OF THE TSM Contents Before we will continue with the trouble shooting example, the layout of the TSM shall be described.


The layout of the TSM is as followed: S Index of Warnings/Malfunctions (I-W/M) (I-ECAM, I-EFIS, I-LOCAL, I-OBSV) S Index of CMS Fault Messages (I-CMS) S Introduction (00-INTRO) S Standard ATA Chapters - Table of Contents - ATA Chapter (CH)-Section (SE)-Sub Section (SU) S Fault Symptoms (Page Block 101 --> Page 101 bis 199) S Fault Isolation Procedures (Page Block 201 --> Page 201 bis 299) S Block Diagrams (Page Block 301 --> Page 301 bis 399) The contents of the several paragraphs (sections) will be described in the following pages. The given troubleshooting example is shown as a red guideline. If the number of pages is over 100 the page block continues with A, B, C etc.(A101, or A201).

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INDEX OF WARNINGS/MALFUNCTIONS (I-W/M) This part of the TSM contains a list of the following: S I-ECAM (ECAM) - EWD Warning(s) - STS-Maintenance (SD) - SD-Flag(s) - SD-Advisory(ies) S I-EFIS (EFIS) - PFD-Flag(s) - ND-Flag(s) S I-LOCAL(Local Warnings/Cautions) S I-OBSV (Observations / Crew/Maintenance) In the particular groups the informations are alphabetically sorted. For the troubleshooting the I-W/M serves as an introduction to the TSM, because you can see whether the warning message from the CFDS PFR(Post Flight Report) and /or the message from the log book is covered in the TSM or not. With the information of the ATA chapter and part in the page block 101 (e.g. 22-ECAM) in the I-W/M the further way of troubleshooting in the TSM Standard ATA chapters is determined. The example in figure 3 is described in the TSM chapter 00-INTRO. For our example select the next pages. ATTENTION! The ATA chapter on the Post Flight Report (PFR) must not necessary be the same as in the TSM (TSM ATA). For example: AUTO FLT A/THR OFF...........22-00 (PFR ATA) 22-ECAM or 77-ECAM (TSM ATA, PB 101)


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Figure 3

TSM Index of Warnings/Malfunctions Page4 Page: 7

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INDEX OF WARNINGS/MALFUNCTIONS (I-W/M) (CONT.) Example In the Index of Warnings/Malfunctions part I-ECAM you can find the information of the cockpit effects in our PFR-example (figure 1, page 3) as follows: VENT EXTRACT FAULT


So the warning message is covered in the TSM. Informations for further trouble shooting is given in column 3 (TSM ATA CH-PB 101): Go to ATA chapter 21 part ECAM in page block 101 (21-ECAM).


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Figure 4

I-ECAM Page (Example) Page4 Page: 9

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INDEX OF CFDS FAULT MESSAGES (I-CFDS) This part of the TSM contains a list of all FAULT messages of all the system BITE‘s. The list is sorted alphabetically. Each index is broken down into five columns: S column 1: Fault messages (CFDS message) S column 2: ATA reference according to the PFR S column 3: Source of the fault message S column 4: Failure class S column 5: Reference to the TSM ATA chapter part Fault Symptoms (Page Block 101), where the further trouble shooting is described. For troubleshooting the I-CMS also serves as an entry point as the I-W/M before. Here you can see whether the FAULT message from the CFDS PFR is covered in the TSM or not. The example in figure 5 is described in the TSM chapter 00-INTRO. For our trouble shooting example select the next pages.





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Figure 5

TSM Index of CMS Fault Messages Page4 Page: 11

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INDEX OF CFDS FAULT MESSAGES (I-CFDS) (CONT.) Example For our trouble shooting example you can find the FAULT message (part FAILURE MESSAGES in the PFR, figure 1, page 3) in the I-CFDS: EXTRACT FAN 18HQ


Also the fault message is covered in the TSM. With the information of the ATA chapter and the part in page block 101 in the I-CFDS, column 5 (CH-PB 101), the further way for trouble shooting in the TSM standard ATA chapters is determined: Go to ATA chapter 21 part ECAM in page block 101 (21-ECAM).


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Figure 6

I-CMS Page (Example) Page4 Page: 13

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INTRODUCTION (INTRO) The introduction describes the purpose of the TSM and gives informations for the usage of the TSM and the CFDS e.t.c. The table of contents of the INTRO is shown on the next page (Figure 7).





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Figure 7

TSM INTRO Table of Contents Page4 Page: 15

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STANDARD ATA CHAPTERS (21....80) General After you have confirmed, that the pilots report (log book) and /or a correlating FAULT message are covered in the TSM, you go to the specific ATA chapter.(Example: CHAPTER 21) Each ATA chapter contains a table of contents(see Figure 8). Each chapter begins with the page block 101 (Fault Symptoms), broken down in the same way as we have seen it before in the indexes: S 21-ECAM S XX-EFIS (where available) S 21-LOCAL S 21-OBSV S 21-CFDS After this the ATA chapter is broken down into sections (SE) and sub-sections (SU), including: S Fault Isolation Procedures (page block 201) S Block Diagrams (page block 301). For each chapter the structure is the same. Corresponding to the data in the Post Flight Report (PFR), page block 101 (Fault Symptoms) will be selected first.





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Figure 8

TSM ATA Chapter Table of Contents Page4 Page: 17

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STANDARD ATA CHAPTERS (CONT.) Fault Symptoms (Page Block 101) ATA Page Block 101 (page 101....199,or A101...A199 etc.) contains all warnings/malfunctions and the corresponding CFDS fault messages, that are available for the ATA chapter. In the column CFDS FAULT MESSAGES following data are listed: S SOURCE (source of the message) S MESSAGE (Fault message) S IDENT(identifiers,systems that are influenced by the failure) S ATA (ATA Chapter) S C (Failure Class) In some cases the IDENTIFIERS included in the PFR has to be considered, to find the correct FAULT ISOLATION PROCEDURE TASK. In the column FAULT ISOLATION PROCEDURE there is shown the fault isolation procedure number, called TASK number. This is the entry point for further fault isolation.These task numbers belong to the AMTOSS (Aircraft Maintenance Task Oriented Support System). All maintenance actions (routine /non-routine) are described in different documents under task /sub-task numbers. With the TASK number you will find the fault isolation procedure in page block 201. The example in figure 9 is described in the TSM chapter 00-INTRO. For our trouble shooting example select the next pages.





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Figure 9

TSM Fault Symptoms (Page Block 101) Page4 Page: 19

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STANDARD ATA CHAPTERS (CONT.) Fault Symptoms (Page Block 101) (Cont.) Example With the TASK number in the FAULT ISOLATION PROCEDURE column of page block 101 you will find the fault isolation procedure in page block 201. For the trouble shooting example the task number is: 212600 T810 810 which can be found in chapter 21, section 26, sub-section 00, page 221(212600 P221).





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Figure 10

TSM Fault Symptom Page (Example) Page4 Page: 21

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STANDARD ATA CHAPTERS (CONT.) Fault Isolation Procedures (Page Block 201) To comply with technical requirements and maintenance task requirements, the invariable structure of Page Block201 (Page 201-299) is as follows: S Possible Causes S Job Set-up Information S Fault Confirmation S Fault Isolation S Close-Up After selecting the ATA chapter (in the exercise: 21-26-00), you get to the specific fault isolation procedure by the task number(in the exercise: .....-810-810), or Page 221. 4. Possible Causes Shows all the LRU(s) that might be replaced during the fault isolation procedure. Suspect wiring ,pipes , coaxial cables etc ...are also shown. 5. Job Set-up Information Gives a reference to documents(AMM, ASM etc...), where you can find the tasks that must be done, before the trouble shooting procedure can be started. 6. Fault Confirmation In order to prevent unjustified troubleshooting, the fault should be confirmed (when possible) prior to troubleshoot the system. The fault can be confirmed by BITE tests, operational tests or functional tests. 7. Fault Isolation When a fault is confirmed, you have to follow the fault isolation procedure that is described in this section. After performing the fault isolation procedure you should do a test, to check correct operation. 8. Close-Up Depending on the fault confirmation and /or fault isolation, a close-up procedure may be necessary in order to put the aircraft back to its initial configuration.


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Figure 11

TSM Fault Isolation Procedures (Page Block 201) Page4 Page: 23

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STANDARD ATA CHAPTERS (CONT.) Block Diagrams (Page Block 301) Page Block 301 (Page 301 to 399) contains Block Diagrams and/or Schematics, providing the troubleshooter with a logical understanding of system or subsystem. For our example there is no Page Block 301 available. So we selected an example out of the section 21-28.





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Figure 12

TSM Block Diagrams (Page Block 301) Page4 Page: 25

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ATA 00-03 TSM

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