Entry of the Engine Serial Number through the MCDU [CFMI]

TASK 73-21-60-740-009-A
Entry of the Engine Serial Number through the MCDU

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
Serial Number Entry - MCDU Screens ** ON A/C NOT FOR ALL
Serial Number Entry - MCDU Screens ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 73-21-60-861-060-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 73-21-60-869-063-A ** ON A/C NOT FOR ALL

B. Preparation for test
(1) On the overhead maintenance panel 50VU, push then release the ENG/FADEC GND PWR/1(2) pushbutton switch. The ON legend comes on.
(2) On the left or right MCDU get the SYSTEM REPORT/TEST ENG page (Ref. AMM TASK 31-32-00-860-012).

4. Procedure
Subtask 73-21-60-740-056-A ** ON A/C NOT FOR ALL

A. Do this procedure for the ECU 1(2) channel A.

NOTE: This test is for the system 1. For the other system(s), use the indications between the parentheses.

ACTION	RESULT
1.On the MCDU:
Push the line key adjacent to the FADEC 1A (2A) indication.	The ENGINE 1(2) MAIN MENU page comes into view.
2.Push the line key adjacent to the LRU IDENT REPORT indication.	The LRU IDENTIFICATION page comes into view. If there is a NVM failure, the NVM FAULT: DATA NOT RETRIEVABLE indication comes into view.
3.Push the line key adjacent to the CONFIGURATION CHANGE indication.
4.Push the line key adjacent to the ENGINE S/N CHANGE indication.	The SERIAL NUMBER ENTRY menu comes into view. NOTE: If the engine serial number is automatically entered (incorrect for engine currently installed) and correct serial number entry is not possible, replace ECU IDENT connector as per VSB 72-0518 and re-enter correct engine serial number (Some ECU IDENT connectors retain serial number from previous engine and cannot be updated on aircraft).
5.On the MCDU keyboard, enter the engine serial number (6 digits).	The serial number comes into view under the RETURN indication.
6.Push the line key adjacent to the engine serial number indication.	The serial number goes out of view under the RETURN indication and comes into view under the ENTER NEW S/N indication.

(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) Stop the MCDU.

5. Close-up
Subtask 73-21-60-860-061-A ** ON A/C NOT FOR ALL

A. On the overhead maintenance panel 50VU:

Push the ENG/FADEC GND PWR 1(2) pushbutton switch. The ON legend goes off.

Subtask 73-21-60-862-060-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 02:56:50 UTC