Removal of the Fuel Quantity-Indicating Computer (FQIC)

TASK 28-42-34-000-001-A
Removal of the Fuel Quantity-Indicating Computer (FQIC)

ZONE: 122
FIN: 3QT

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 3M (10 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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
Fuel Quantity-Indicating Computer (FQIC)

3. Job Set-up
Subtask 28-42-34-861-050-A

A. Energize the ground service network (Ref. AMM TASK 24-42-00-861-001).

Subtask 28-42-34-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	FUEL/FQI/CHAN/1	1QT	A13
** ON A/C NOT FOR ALL
121VU	FUEL/FQI/CHANNEL/1 AND 2	8QT	L26
** ON A/C ALL
121VU	FUEL/FQI/CHAN/2	2QT	M27
** ON A/C NOT FOR ALL
121VU	FUEL/FQI/CHANNEL/1 AND 2	8QT	L25

Subtask 28-42-34-010-050-A

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the access door 811.
(2) Open the access door 811.

4. Procedure
Subtask 28-42-34-020-050-A

A. Removal of the FQIC (3QT)
(1) Loosen the knurled nuts (3).
(2) Remove the FQIC (4) from its rack (2).
(3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

[Rev.10 from 2021] 2026.04.02 06:18:08 UTC