Check of the CFDS to Make Sure that the Pylon Leak Detection and APU Leak Detection Operates Correctly

TASK 36-11-00-040-004-A
Check of the CFDS to Make Sure that the Pylon Leak Detection and APU Leak Detection Operates Correctly

Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
NO	NO	NO	0.3	0.3	1

1. Reason for the Job
MMEL 36-00-01A
AIR BLEED MAINTENANCE MESSAGE
MMEL 36-00-01A
AIR BLEED MAINTENANCE MESSAGE
MMEL 36-00-01D
AIR BLEED MAINTENANCE MESSAGE
MMEL 36-00-01D
AIR BLEED MAINTENANCE MESSAGE
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 36-11-00-740-001-A	BITE Test of the BMC 1(2)

3. Job Set-up
Subtask 36-11-00-861-084-A ** ON A/C NOT FOR ALL

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

Subtask 36-11-00-865-084-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20

Subtask 36-11-00-860-075-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) On the AIR COND panel:

Make sure that the ENG 1(2) BLEED pushbutton switches are pushed (OFF legends are off).
Make sure that the crossbleed selector switch is at AUTO position.
Make sure that the APU BLEED pushbutton switch is released (ON legend is off).

4. Procedure
Subtask 36-11-00-040-064-A ** ON A/C NOT FOR ALL

A. Check of the CFDS to Make Sure that the Pylon Leak Detection Operates Correctly
(1) Do the BITE test of the BMC1 and BMC2 and print each TEST RESULT page (Ref. AMM TASK 36-11-00-740-001).
(2) Make sure that the TEST RESULT pages do not show these maintenance messages:

ATA	MESSAGE	CLASS FAULT
361100	CHECK BMC1	2
361100	NO DATA FROM BMC2	2
361100	CHECK BMC2	2
361100	NO DATA FROM BMC1	2
361134	BMC1	2
361134	BMC2	2
362215	ENG1 PYLON LOOP INOP	2
362215	ENG2 PYLON LOOP INOP	2
362217	APU LOOP INOP OR BMC IDENT CKT	2

Subtask 36-11-00-040-064-B ** ON A/C NOT FOR ALL

ATA	MESSAGE	CLASS FAULT
362217	APU LOOP INOP OR BMC IDENT CKT	2

5. Close-up
Subtask 36-11-00-862-079-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 01:06:25 UTC