Visual Check of Cargo Compartment Decompression, Lining, Floor Panels and Pressure Compensation Valve (as far as Visible, if ACT(s) or Sliding Carpet System Installed)

TASK 25-50-00-200-002-A
Visual Check of Cargo Compartment Decompression, Lining, Floor Panels and Pressure Compensation Valve (as far as Visible, if ACT(s) or Sliding Carpet System Installed)

CAUTION: BE CAREFUL WHEN YOU INSPECT THE SEALING OF THE CARGO COMPARTMENT LININGS, SIDEWALL PANELS, CEILING PANELS, BALL MATS, PARTITION WALLS, FLOOR PANELS AND COVER PLATES. MAKE SURE THAT THE CARGO COMPARTMENTS ARE CORRECTLY SEALED. PRESSURE LEAKS THROUGH THE CARGO COMPARTMENT CAN CAUSE A DECREASE IN THE PERFORMANCE OF THE FIRE EXTINGUISHING SYSTEM, IF A FIRE OCCURS.

ZONE: 130
ZONE: 150
ZONE: 160

1. Reason for the Job
Refer to the MPD TASK: 255000-01
VISUAL CHECK OF CARGO COMPARTMENT DECOMPRESSION, LINING, FLOOR PANELS AND PRESSURE COMPENSATION VALVE (AS FAR AS VISIBLE, IF ACT(S) OR SLIDING CARPET SYSTEM INSTALLED).
To make sure that the cargo compartment is airtight.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.060 and 0.055 m.daN (5.31 and 4.87 lbf.in )

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

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 25-50-00-200-024-A	Cargo Compartment Linings with Honeycomb Core - General Repair/Protection Information
TASK 25-54-11-400-001-A	Installation of the Forward Cargo-Compartment Partition FR24A
TASK 25-54-12-000-001-A	Removal of the Forward Cargo-Compartment Partition
TASK 25-54-12-300-001-A	Fasteners Missing from the Lining Panels of the Forward Cargo Compartment
TASK 25-54-12-400-001-A	Installation of the Forward Cargo-Compartment Partition
TASK 25-54-12-400-002-A	Installation of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-55-11-300-001-A	Fasteners Missing from the Lining Panels of the Aft Cargo Compartment
TASK 25-55-11-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR47
TASK 25-55-11-400-002-A	Installation of the Ceiling Panels in the Aft Cargo-Compartment - FR47/FR59
TASK 25-55-11-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR47/FR59
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-300-001-A	Fasteners Missing from the Lining Panels of the Bulk Cargo Compartment
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-002-A	Installation of the Ceiling Panels in the Aft Cargo Compartment at FR59/FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
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 53-42-14-400-001-A	Installation of the Aft Cargo-Compartment Floor-Panels Zone 150
TASK 53-42-14-400-001-A-01	Installation of the Aft Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option)
TASK 25-50-00-200-024-A	Cargo Compartment Linings with Honeycomb Core - General Repair/Protection Information (for corrective action)
TASK 25-50-00-340-002-A	Repair of the Flanges of the Cargo-Compartment Decompression Panels (for corrective action)
TASK 51-76-11-300-001-A	Repair of the Sealing (for corrective action)
TASK 53-22-14-000-001-A	Removal of the Forward Cargo-Compartment Floor-Panels (for corrective action)
TASK 53-22-14-400-001-A	Installation of the Forward Cargo-Compartment Floor-Panels (for corrective action)
TASK 53-22-14-400-001-A-01	Installation of the Forward Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option) (for corrective action)
TASK 53-42-14-000-001-A	Removal of the Aft Cargo-Compartment Floor-Panels Zone 150 (for corrective action)
TASK 53-42-14-400-001-A	Installation of the Aft Cargo-Compartment Floor-Panels Zone 150 (for corrective action)
TASK 53-42-14-400-001-A-01	Installation of the Aft Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option) (for corrective action)
SRM 530200	(for corrective action)
Decompression Panel ** ON A/C NOT FOR ALL
Decompression Panel ** ON A/C NOT FOR ALL
Decompression Panel ** ON A/C NOT FOR ALL
Pressure Compensation Valve

3. Job Set-up
Subtask 25-50-00-010-061-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Energize the ground service network (Ref. AMM TASK 24-42-00-861-001).
(2) Open the forward and/or aft cargo-compartment doors (Ref. AMM TASK 52-30-00-860-001).
(3) Put the ACCESS PLATFORM 2M (6 FT) in position at the opening of the forward and/or aft cargo-compartment door(s).
(4) Set the light switch to on.
(5) Put the WARNING NOTICE(S) on the control panel(s) of the cargo loading system to tell persons not to use it.

Subtask 25-50-00-010-061-C ** ON A/C NOT FOR ALL

Subtask 25-50-00-865-127-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	SEMI AUTO CLS-FWD	3MY	E08
2000VU	SEMI AUTO CLS-FWD	2MY	E06
2001VU	SEMI AUTO CLS-AFT	103MY	D08
2001VU	SEMI AUTO CLS-AFT	102MY	D06

4. Procedure
Subtask 25-50-00-210-057-A

A. Visual Inspection of the Decompression, Lining, Floor Panels and Pressure Compensation Valve

WARNING: USE GOGGLES AND PROTECTIVE CLOTHING WHEN YOU REMOVE, INSTALL OR TORQUE THE FASTENER. IF PARTS OF THE FASTENER RELEASE SUDDENLY, THERE IS A RISK OF INJURY.

CAUTION: WHEN THE RELEASE FUNCTION OF THE BRACKET (SPRING-LOADED CATCH) WAS OPERATED, REPLACE THE FASTENER ASSEMBLY WITH THE SILVER METALLIC WASHERS. DO NOT INSTALL FASTENER ASSEMBLIES WITH WHITE WASHERS TOGETHER WITH FASTENER ASSEMBLIES WITH SILVER METALLIC WASHERS ON THE SAME PANEL. THIS CAN CAUSE MALFUNCTION OF THE RELATED PANEL.

(1) Decompression panels:

Decompression Panel ** ON A/C NOT FOR ALL

(a) Examine each decompression panel for cracks and other damage.
(b) If a decompression panel is damaged, refer to (Ref. AMM TASK 25-50-00-200-024) (Ref. AMM TASK 25-50-00-340-002).
(c) Make sure that each decompression panel has a seal installed, missing seals are not permitted.
(d) Make sure that the seal of each decompression panel is in the correct condition.
(e) Make sure that each decompression panel is in the correct position.
(2) Lining panels:
(a) Examine each lining panel for cracks and other damage.
(b) If a lining panel is damaged, refer to (Ref. AMM TASK 25-50-00-200-024).
(c) Make sure that each lining panel has a seal installed, missing seals are not permitted.
(d) Make sure that the seal of each lining panel are in the correct condition.
(e) Make sure that each lining panel is in the correct position.
(f) Make sure that the linings panels are correctly attached:
1 Tighten the loose fasteners to the correct torque value:

2 If one or more fasteners are missing, refer to these procedures:

Fasteners Missing from the Lining Panels of the Forward Cargo Compartment (Ref. AMM TASK 25-54-12-300-001)
Fasteners Missing from the Lining Panels of the Aft Cargo Compartment (Ref. AMM TASK 25-55-11-300-001)
Fasteners Missing from the Lining Panels of the Bulk Cargo Compartment (Ref. AMM TASK 25-55-12-300-001).

(3) Floor panels:
(a) Examine each floor panel for:

Impact damage
Deep scratches
Cracks
Deformation
Delamination.

NOTE: The strips of different colors are not considered as a damage of the floor panel. The bright points of the panel edge are not considered as a damage of the floor panel.

(b) If a floor panel is damaged, do a repair SRM 530200 or replace the panel (Ref. AMM TASK 53-22-14-000-001) (Ref. AMM TASK 53-42-14-000-001) or (Ref. AMM TASK 53-22-14-400-001) (Ref. AMM TASK 53-42-14-400-001).
(c) Make sure that the floor panels are correctly installed.
(d) If the section hoses come out of the space between floor panels, refer to (Ref. AMM TASK 53-42-14-400-001).
(e) Make sure that the sealant at the floor panel joints is in the correct condition.
(f) If the sealant is damaged, repair it (Ref. AMM TASK 51-76-11-300-001).
(4) Pressure compensation valve:

Pressure Compensation Valve

(a) Make sure that each pressure compensation valve (4) is in closed position.
(b) If a pressure compensation valve (4) is in open position, close it:
1 Remove the partition panel (5) to get access to the pressure compensation valve (4) (Ref. AMM TASK 25-54-12-000-001) or (Ref. AMM TASK 25-55-12-000-001).
2 Hold the pressure compensation valve (4).
3 Loosen the studs (2) and remove the cover (3).
4 Push the pin (1) in the closed position.
5 Put the cover (3) in its correct installation position.
6 TORQUE the studs (2) to between 0.060 and 0.055 m.daN (5.31 and 4.87 lbf.in )

NOTE: When you tighten the studs you will hear a click. This is a sign that you have used the correct procedure to tighten the studs. This click is not a sign that the correct torque value is applied. When the studs are tightened, make sure that the correct torque value is applied.

7 Install the partition panel (5) (Ref. AMM TASK 25-54-12-400-001) or (Ref. AMM TASK 25-55-12-400-001).

5. Close-up
Subtask 25-50-00-865-128-A

A. 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
2000VU	SEMI AUTO CLS-FWD	3MY	E08
2000VU	SEMI AUTO CLS-FWD	2MY	E06
2001VU	SEMI AUTO CLS-AFT	103MY	D08
2001VU	SEMI AUTO CLS-AFT	102MY	D06

Subtask 25-50-00-410-060-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(3) Set the light switch to off.
(4) Close the forward and/or aft cargo-compartment doors (Ref. AMM TASK 52-30-00-860-002).
(5) Remove the access platform(s).
(6) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

Subtask 25-50-00-410-060-C ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the light switch to off.
(3) Close the forward and/or aft cargo-compartment doors (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
(5) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:36:56 UTC