Restoration of the Aircraft after Flight with a Failed or Missing Ground Door Opening Cable

TASK 32-12-00-440-005-A
Restoration of the Aircraft after Flight with a Failed or Missing Ground Door Opening Cable

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

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

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

1. Reason for the Job
MMEL 32-12-01A
MAIN GEAR DOOR GROUND OPENING CABLE
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 BARRIER(S)
No specific	AR	WARNING NOTICE(S)
460005835	2	SLEEVE - GROUND LOCK
98DNSA20208040	1	RIGGING PIN

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [2804GM] (CABLE CONTROL)
195BB
FOR [2805GM] (CABLE CONTROL)
196BB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-23-00-860-002-A	Connection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A	Installation of the Safety Devices on the Landing Gear Doors
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-12-00-710-002-A	Operational Test of the Main Landing Gear (MLG) Doors Ground-Opening-Mechanism
TASK 32-12-16-000-001-A	Removal of the Control Cable
TASK 32-12-16-400-001-A	Installation of the Control Cable
TASK 32-33-00-720-001-A	Functional Check of Free-Fall Extension
MLG Door Ground-Opening System

3. Job Set-up
Subtask 32-12-00-941-068-A

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

A. Safety Precautions
(Ref. AMM TASK 29-00-00-910-002).
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) On the panel 400VU:

make sure that the landing-gear control-lever 6GA is in the DOWN position
put a WARNING NOTICE(S) in position in the cockpit to tell persons not to operate the landing gear.

(3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the Green and Yellow Hydraulic systems.
(4) On the panel 110VU, make sure that the GRAVITY GEAR EXTN handle is folded into the center console.
(5) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).

Subtask 32-12-00-860-073-A

B. Aircraft Maintenance Configuration

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(2) Depressurize the Green Hydraulic system (Ref. AMM TASK 29-10-00-864-001).

Subtask 32-12-00-865-074-A

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 32-12-00-010-064-A

D. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) below the applicable zone 730(740).
(2) Open the applicable access panel(s):
(a) FOR [2804GM] (CABLE CONTROL)
- open 195BB
(b) FOR [2805GM] (CABLE CONTROL)
- open 196BB.
(3) If necessary, open the MLG doors by the free fall system (Ref. AMM TASK 32-33-00-720-001).
(4) Install a 460005835 SLEEVE - GROUND LOCK on each MLG door actuating cylinder (Ref. AMM TASK 32-00-00-481-002).
(5) Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001).

4. Procedure
Subtask 32-12-00-420-068-A

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

A. Reactivation of the MLG Ground Door Opening Cable

MLG Door Ground-Opening System

(1) Remove and discard the lockwire from the operating lever/by-pass valve rigging pin holes.
(2) Install the 98DNSA20208040 RIGGING PIN in the rigging pin holes through the operating lever into the by-pass valve.
(3) If the defective opening cable has been removed:

install a new cable (Ref. AMM TASK 32-12-16-400-001).

(4) If the defective opening cable is installed with the cable ends secured:

release the cable end(s)
replace the opening cable (Ref. AMM TASK 32-12-16-000-001) (Ref. AMM TASK 32-12-16-400-001).

Subtask 32-12-00-710-055-A

B. Operational Test
(1) Do the operational test of the MLG door ground-opening mechanism (Ref. AMM TASK 32-12-00-710-002).

5. Close-up
Subtask 32-12-00-410-056-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the applicable access panel(s):
(a) FOR [2804GM] (CABLE CONTROL)
- close 195BB
(b) FOR [2805GM] (CABLE CONTROL)
- close 196BB.

Subtask 32-12-00-860-074-A

B. Aircraft Maintenance Configuration
(1) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
(2) Close the applicable MLG door (Ref. AMM TASK 32-12-00-410-001).

Subtask 32-12-00-865-075-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 32-12-00-942-066-A

D. Removal of Equipment
(1) Remove the access platform(s).
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:41:11 UTC