General Visual Inspection of the Integrated Impact Wall(s) and Pipework Protection Cover (If Installed)

TASK 28-28-00-200-002-A
General Visual Inspection of the Integrated Impact Wall(s) and Pipework Protection Cover (If Installed)

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

ZONE: 150
ZONE: 160

1. Reason for the Job
Refer to the MPD TASK: 282800-09
GENERAL VISUAL INSPECTION OF THE INTEGRATED IMPACT WALL(S) AND PIPEWORK PROTECTION COVER (IF INSTALLED).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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

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 25-50-00-340-003-A	Filler Repair Method (Damage Not Through) - All Cargo Compartment Linings with Honeycomb Core
TASK 25-50-00-340-004-A	Patch and Filler Repair Method (Damage Not Through) - All Cargo Compartment Linings with Honeycomb Core
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-11-49-000-001-A	Removal of the ACT Integrated Impact Wall
TASK 28-11-49-000-002-A	Removal of the Additional Center Tank (ACT) Integrated Impact Wall
TASK 28-11-49-400-001-A	Installation of the ACT Integrated Impact Wall
TASK 28-11-49-400-002-A	Installation of the Additional Center Tank (ACT) Integrated Impact Wall
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-005-A	Open the FWD or Aft Cargo-Compartment Door with the Crane
TASK 52-30-00-860-009-A	Close the FWD or Aft Cargo-Compartment Door with the Crane
AIPC 28-11-49-
Location of Attachment Points
Location of Attachment Points ** ON A/C NOT FOR ALL
Location of Attachment Points ** ON A/C NOT FOR ALL
Location of Attachment Points ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-28-00-860-067-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
(2) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(3) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the opening of the forward or the aft cargo-compartment.
(4) Open the forward or the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003) or (Ref. AMM TASK 52-30-00-860-005).

4. Procedure
Subtask 28-28-00-210-050-A ** ON A/C NOT FOR ALL

A. Visual Inspection of the Integrated Impact Walls.
(1) Get access to the aft wall of the ACT in the cargo compartment.
(2) Make sure that the fasteners and screws of the integrated impact walls are correctly installed and tight.

NOTE: The integrated impact walls have protection covers and heat shields which are assembled together with screws ("R" attachment points). The integrated impact walls are attached to the ACT with quick-release fasteners ("Y" attachment points).

(3) If you find damaged or missing fasteners ("Y" attachment points) or screws ("R" attachment points), obey the damage limits:
(a) Damage limits of "Y" attachment points - on one half of the integrated impact walls:
1 At least three of "Y" attachment points on each half of the integrated impact walls must not be damaged.
a If you find loose fasteners and the attachment holes of the protection cover (visible part of the integrated impact walls) are not damaged, replace the fasteners AIPC 28-11-49-.
b If you find damaged fasteners, but less than three, and the protection cover at the attachment holes are damaged, then you can dispatch the aircraft in the subsequent conditions:

The placards must be visible
You must do a repair procedure of the attachment holes or replace the applicable integrated impact wall immediately (refer to step (6)).

2 Dispatch is possible with all "Y" attachment points damaged in the subsequent conditions:

You must remove the remaining protection cover
There is no damage on the heat shield (refer to step (5))
You must install the heat shield with new spacers
You must do a repair procedure at the next night stop (refer to step (6)).

(b) Damage limits of "R" attachment points - on one half of the integrated impact walls:
1 Only one of the "R" attachment points - on each half of the integrated impact walls can be damaged or missed:
a If you find loose screws and the attachment holes of the protection cover (visible part of the integrated impact walls) are not damaged, tighten the screws.
b If you find only one damaged screw, and the attachment holes of the protection cover are damaged, then you can dispatch the aircraft in the subsequent conditions:

The placards must be visible
You must do a repair procedure of the attachment holes or replace the applicable integrated impact wall as soon as possible (refer to step (6)).

2 You can dispatch the aircraft with only one missing or one damaged attachment screw type "R" on the integrated impact walls.
(4) Examine the integrated impact walls for cracks and damage.

NOTE: The integrated impact walls have protection covers and heat shields which are assembled together.

(a) Examine the surface of the protection cover for cracks and damage.
(b) If you find damage on the protection cover, refer to the damage limits (Ref. AMM TASK 25-50-00-340-003).
(c) If you find damage which is more than the limits, you can repair the damage (refer to step (6)), or you can dispatch the aircraft in the subsequent conditions:

You must remove the remaining protection covers
There is no damage on the heat shield (refer to step (5))
You must install the heat shield with new spacers
You must do a repair procedure of the protection cover at the next night stop (refer to step (6)).

(5) If you have removed the protection cover, do an inspection of the heat shield for cracks and damage:
(a) If you find damage, you can repair the damage (refer to step (6)).
(6) Do the necessary repairs (Ref. AMM TASK 25-50-00-340-003) or (Ref. AMM TASK 25-50-00-340-004) or replace the integrated impact walls (Ref. AMM TASK 28-11-49-000-001) (Ref. AMM TASK 28-11-49-400-001).

NOTE: You can also use the alternate repair procedures in ATA 25-00-00, P. Block 801, which are applicable to the cargo linings.

Subtask 28-28-00-210-050-B ** ON A/C NOT FOR ALL

A. Visual Inspection of the Integrated Impact Walls

NOTE: The integrated impact walls are installed on the ACT2.

(1) Get access to the aft wall of the ACT2 in the cargo-compartment.
(2) Make sure that the fasteners and screws of the integrated impact walls are correctly installed and tight.

(3) If you find damaged or missing fasteners ("Y" attachment points) or screws ("R" attachment points), obey the damage limits:
(a) Damage limits of the "Y" attachment point - on one half of the integrated impact walls.
1 At least three of the "Y" attachment points on each half of the integrated impact wall must not be damaged.
a If you find loose fasteners and the attachment holes of the protection cover (visible part of the integrated impact walls) are not damaged, replace the fasteners.
b If you find damaged fasteners, but less than three, and the protection cover at the attachment holes is damaged, then you can dispatch the aircraft in the subsequent conditions:

the placards must be visible,
you must do a repair procedure of the attachment holes or replace the applicable integrated impact wall as soon as possible (Refer to step (6)).

2 Dispatch is possible with all the "Y" attachment points damaged in the subsequent conditions:

you must remove the remaining protection cover,
there is no damage on the heat shield (Refer to step (5)),
you must install the heat shield with new spacers,
you must do a repair procedure at the next night stop (Refer to step (6)).

(b) Damage limits of the "R" attachment points - on one half of the integrated impact walls.
1 Only one of the "R" attachment points - on each half of the integrated impact walls can be damaged or missed.
a If you find loose screws and the attachment holes of the protection cover (visible part of the integrated impact walls) are not damaged, tight the screws.
b If you find only one damaged screw, and the protection cover at the attachment hole is damaged, then you can dispatch the aircraft in the subsequent conditions: - the placards must be visible, - you must do a repair procedure of the attachment holes or replace the applicable integrated impact wall as soon as possible (Refer to step (6)).
2 You can dispatch the aircraft with only one missing or one damaged attachment screw type "R" on the integrated impact wall.
(4) Examine the integrated impact walls for cracks and damage.

NOTE: The integrated impact walls have protection covers and heat shields which are assembled together.

(a) Examine the surface of the protection cover for cracks and damage.
(b) If you find damage on the protection cover, refer to the damage limits (Ref. AMM TASK 25-50-00-340-003).
(c) If you find damage which is out of limits you can do a repair (Refer to step (6)).

or you can dispatch the aircraft in the subsequent conditions:

you must remove the remaining protection cover,
there is no damage on the heat shield (Refer to step (5));
you must install the heat shield with new spacers,
you must do a repair procedure of the protection cover at the next night stop (Refer to step (6)).

(5) If you have removed the protection cover, do an inspection of the heat shield for cracks and damage.
(a) If you find damage, you can do a repair (Refer to step (6)).
(6) Do the necessary repairs (Ref. AMM TASK 25-50-00-340-003) (Ref. AMM TASK 25-50-00-340-004) or replace the integrated impact wall (Ref. AMM TASK 28-11-49-000-001) (Ref. AMM TASK 28-11-49-400-001).

NOTE: You can also use the alternate repair procedures in 25-00-00, P. Block 801, which are applicable to the cargo linings.

Subtask 28-28-00-210-050-CJ ** ON A/C NOT FOR ALL

NOTE: The integrated impact walls have the protection covers and the heat shields which are assembled together with the screws ("R" attachment points). The integrated impact walls are attached to the ACT with the quick release fasteners ("Y" attachment points).

(3) If you find the damaged or missing fasteners ("Y" attachment points) or screws ("R" attachment points), obey as follows:
(a) The damage limits of "Y" attachment points on one half of the integrated impact walls:
1 At least three of "Y" attachment points on each half of the integrated impact walls must not be damaged:
a If you find loose fasteners and the attachment holes of the protection cover (part of the integrated impact walls that you can see) are not damaged, replace the fasteners AIPC 28-11-49-.
b If you find damaged fasteners, but less than three, and the protection cover at the attachment holes are damaged, then you can send the aircraft in the subsequent conditions:

The placards must be visible
You must do a repair procedure of the attachment holes or replace the applicable integrated impact wall immediately (refer to step (6)).

2 You can send the aircraft with all "Y" attachment points damaged in the subsequent conditions:

You must remove the remaining protection cover
There is no damage on the heat shield (refer to step (5))
You must install the heat shield with the new spacers
You must do a repair procedure at the next night stop (refer to step (6)).

(b) The damage limits of "R" attachment points on one half of the integrated impact walls:
1 Only one of the "R" attachment points on each half of the integrated impact walls can be damaged or missed:
a If you find loose screws and the attachment holes of the protection cover (part of the integrated impact walls that you can see) are not damaged, tighten the screws.
b If you find only one damaged screw, and the attachment holes of the protection cover are damaged, then you can send the aircraft in the subsequent conditions:

The placards must be visible
You must do a repair procedure of the attachment holes or replace the applicable integrated impact wall immediately (refer to step (6)).

2 You can send the aircraft with only one missing or one damaged attachment screw type "R" on the integrated impact walls.
(4) Examine the integrated impact walls for cracks and damage:

NOTE: The integrated impact walls have the protection covers and the heat shields which are assembled together.

(a) Examine the surface of the protection cover for cracks and damage.
(b) If you find damage on the protection cover (Ref. AMM TASK 25-50-00-340-003).
(c) If you find damage which is more than the limits, you can repair the damage (refer to step (6)), or you can send the aircraft in the subsequent conditions:

You must remove the remaining protection covers
There is no damage on the heat shield (refer to step (5))
You must install the heat shield with the new spacers
You must do a repair procedure of the protection cover at the next night stop (refer to step (6)).

NOTE: You can also use the other repair procedures in ATA 25-00-00, P. Block 801, which are applicable to the cargo linings.

5. Close-up
Subtask 28-28-00-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the forward or the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004) or (Ref. AMM TASK 52-30-00-860-009).
(3) Remove the access platform(s).

Subtask 28-28-00-860-276-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 00:08:53 UTC