Removal of the Additional Center Tank (ACT) Integrated Impact Wall

TASK 28-11-49-000-002-A
Removal of the Additional Center Tank (ACT) Integrated Impact Wall

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

ZONE: 130
ZONE: 150
ZONE: 160

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
826

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Integrated Impact Wall of the ACT (AFT Cargo Compartment)

3. Job Set-up
Subtask 28-11-49-860-052-B ** ON A/C NOT FOR ALL

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

Subtask 28-11-49-010-051-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position below the aft-cargo compartment door 826.
(2) Open aft-cargo compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
(3) Set CARGO COMPT LIGHT switch 8LU to the ON position.

4. Procedure
Subtask 28-11-49-020-051-B ** ON A/C NOT FOR ALL

A. Removal of the Integrated Impact Wall

Integrated Impact Wall of the ACT (AFT Cargo Compartment) ** ON A/C NOT FOR ALL

(1) Remove the studs (6) and (7) and the washers (4).
(2) Remove the integrated impact-wall elements (2) and (3) and the lock washers (5) from the ACT (1).

[Rev.10 from 2021] 2026.04.01 00:01:52 UTC