Detailed Inspection of Forward Cargo Compartment Door, Internal Structure

TASK 52-31-11-200-001-A
Detailed Inspection of Forward Cargo Compartment Door, Internal Structure

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: IMMEDIATELY AFTER YOU OPEN THE CARGO COMPARTMENT DOOR, RECORD ON THE WORK CARD ON THE DOOR, THE DATE AND TIME WHEN YOU OPENED IT. IF THE CARGO COMPARTMENT DOOR STAYS OPEN FOR 12 HOURS OR MORE, YOU MUST BLEED THE HYDRAULIC SYSTEM RELATED TO IT. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE DOOR CAN CLOSE SUDDENLY WHEN YOU SET THE DOOR TO "CLOSE". THIS CAN CAUSE DAMAGE TO THE DOOR AND TO THE AIRCRAFT STRUCTURE.

ZONE: 825

1. Reason for the Job
Refer to the MPD TASK: 523103-01
DETAILED INSPECTION OF FORWARD CARGO COMPARTMENT DOOR, INTERNAL STRUCTURE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RDA1)	Adhesive Film Tape-Masking - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ABB1)	Corrosion Preventive Compound-Water Displacing Hard Film -
(Material No.12ABC1)	Corrosion Preventive Compound_Water Displacing Soft Film -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
825	FORWARD CARGO COMPARTMENT DOOR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 51-75-12-300-001-A	Repair of Major Paint Damage on Light Alloy and Composite Material
TASK 51-76-11-300-001-A	Repair of the Sealing
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
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 52-31-13-000-001-A	Removal of the Lining and the Insulation
TASK 52-31-13-400-001-A	Installation of the Lining and the Insulation
TASK 52-31-22-000-001-A	Removal of the Vent Door
TASK 52-31-22-400-001-A	Installation of the Vent Door
SRM 517300
SRM 517400
SRM 523000
SRM 527300
Inspection of the Internal Structure of the FWD Cargo Door ** ON A/C NOT FOR ALL
Inspection of the Internal Structure of the FWD Cargo Door ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-31-11-860-050-A

A. Aircraft Maintenance Configuration
(1) Open the FWD cargo door and safety it with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the opened cargo door.

Subtask 52-31-11-865-052-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
** ON A/C ALL
122VU	DOORS/CARGO	1MJ	T12
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 52-31-11-010-055-B

C. Get Access
(1) Remove the lining and the insulation of the cargo door to get access to the internal cargo door structure (Ref. AMM TASK 52-31-13-000-001).
(2) Remove the vent door cover to get access to the cargo door structure adjacent to the vent door (Ref. AMM TASK 52-31-22-000-001).
(3) Remove the screws, the washers and the access panel from the inner skin of the cargo door.

4. Procedure
Subtask 52-31-11-615-050-A

A. Cleaning Procedure
(1) Make sure that the area for inspection is clean. If the inspection area is not clean:
(a) Clean the area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(2) If there is a Temporary Protection System (TPS) layer applied that prevents the inspection of the area, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).

Subtask 52-31-11-210-051-A

B. Detailed Inspection of Forward Cargo Compartment Door, Internal Structure
(1) Examine the inner side of the outer skin, the edge members, the inner skin and the retainers (of the door seal) for subsequent damage.
(a) If you find a scratch,

find the limits of the damaged area SRM 523000
remove the damage when it is less than the limit SRM 517300
when the scratch is larger than the limit, repair the effected component SRM 523000.

(b) If you find a dent,

find the limits of the damaged area SRM 523000
remove the damage when it is less than the limit SRM 527300
when the dent is larger than the limit, repair the effected component SRM 523000.

find the limits of the corroded area SRM 523000
remove the damage when it is less than the limit SRM 517400
when the corroded area is larger than the limit, repair the effected component SRM 523000.

(2) Examine the longitudinal beams, the door frames and the corner fittings of the cargo door (machined parts) for subsequent damage.
(a) If you find a scratch,

find the limits of the damaged area SRM 523000
remove the damage when it is less than the limit SRM 517300
when the scratch is outside the limit, repair the effected component SRM 523000.

(b) If you find a dent,

find the limits of the damaged area SRM 523000
remove the damage when it is less than the limit SRM 527300
when the dent is outside the limit, repair the effected component SRM 523000.

find the limits of the corroded area SRM 523000
remove the damage when it is less than the limit SRM 517400.
when the corroded area is outside the limit, repair the effected component SRM 523000.

Subtask 52-31-11-210-057-B

C. General Inspection of the Internal Structure of the Cargo Door
(1) Examine all rivets of the cargo door structure.
(a) If you find an empty rivet hole, install the rivet with correct sealant.
(b) If you find damaged or loose rivets, replace them.
(2) Examine the sealant of all structure components for the correct condition. If necessary, replace the sealant (Ref. AMM TASK 51-76-11-300-001).
(3) Make sure that all screws and bolts of the internal structure of the cargo door are correctly tightened and not damaged.
(4) Examine the water drain valves and drain holes of the cargo door to make sure that they are clean and free.
(5) Make sure that the paint coats of the structural components are in the correct condition (Ref. AMM TASK 51-75-12-300-001).

Subtask 52-31-11-916-050-A

D. Application of Temporary Protection System (TPS)
(1) Apply Adhesive Film Tape-Masking - - (Material No.05RDA1) on the items adjacent to the area: the seals, bellows, door mechanisms, proximity switches and fittings.
(2) If there is a TPS layer, do a check of the condition of the TPS layer (Ref. AMM TASK 51-78-00-916-001).

NOTE: AIRBUS recommends that you always apply a new layer of TPS. This is to make sure that the TPS layer continues to give satisfactory corrosion protection. If you think that TPS layer is in the correct condition, you can apply a new layer (as a spray) on the layer.

(3) If the TPS layer is damaged, remove the TPS layer and apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) .
(4) If, before the inspection:

there was removal of the TPS layer
or
the inspection area was cleaned with high pressure water, steam, solvents, and/or cleaning agents.

(a) Apply a full new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) on the inspection area (Ref. AMM TASK 51-78-00-916-001).

5. Close-up
Subtask 52-31-11-410-051-B

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Put the access panel in position to the inner skin of the cargo door and attach it with the screws and the washers.
(3) Install the vent door cover (Ref. AMM TASK 52-31-22-400-001).
(4) Install the lining and the insulation of the cargo door (Ref. AMM TASK 52-31-13-400-001).

Subtask 52-31-11-865-053-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
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
** ON A/C ALL
122VU	DOORS/CARGO	1MJ	T12
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 52-31-11-860-051-A

C. Put the aircraft back to the serviceable condition.
(1) Remove the actuator safety locks and close the FWD cargo door (Ref. AMM TASK 52-30-00-860-002).
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:27:50 UTC