Installation of the BMC

TASK 36-11-34-400-001-A
Installation of the BMC

ZONE: 121
ZONE: 122
FIN: 1HA1
FIN: 1HA2

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
122	AVIONICS COMPARTMENT
811

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 36-11-00-610-801-A	Uploading of the Bleed Monitoring Computer (BMC) Data
TASK 36-11-00-740-001-A	BITE Test of the BMC 1(2)
TASK 36-11-00-740-802-A	BITE Test of the Engine Bleed Air System (EBAS) (System Test)
Bleed Monitoring Computer (BMC)

3. Job Set-up
Subtask 36-11-34-860-051-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).

Subtask 36-11-34-010-051-A

B. Get Access
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position at the access door 811.
(2) Make sure that the access door 811 is open.

Subtask 36-11-34-865-051-A

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1HA1 (BMC1)
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
FOR FIN: 1HA2 (BMC2)
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

4. Procedure
Subtask 36-11-34-420-050-A

A. Installation of the BMC
(1) Clean the component interface and/or the adjacent area.
(2) Remove the CAP-BLANKING from each electrical connector and receptacle.
(3) Make sure that all the electrical connections are clean and in the correct condition.
(4) Install the BMC (1) on its rack (3).
(5) Push the BMC (1) on its rack (3) to connect the electrical connectors (2).
(6) Engage the nut (4) on the lug (5) and tighten.

Subtask 36-11-34-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1HA1 (BMC1)
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
FOR FIN: 1HA2 (BMC2)
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-34-970-050-B ** ON A/C NOT FOR ALL

C. Do a check of the configuration of the BMC that you installed and, if necessary, upload the applicable software (Ref. AMM TASK 36-11-00-610-801).

Subtask 36-11-34-710-050-A ** ON A/C NOT FOR ALL

D. Do the BITE test of the BMC 1 (BMC 2) (Ref. AMM TASK 36-11-00-740-001).

Subtask 36-11-34-710-050-B ** ON A/C NOT FOR ALL

D. Do the BITE test of the Engine Bleed Air System (EBAS) (System Test) (Ref. AMM TASK 36-11-00-740-802).

5. Close-up
Subtask 36-11-34-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 811.
(3) Remove the access platform(s).

Subtask 36-11-34-862-050-A

B. De-energize the ground service network (Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 01:08:59 UTC