Installation of the HP Air-Ground Connector Door

TASK 52-42-16-400-001-A
Installation of the HP Air-Ground Connector Door

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.

WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:

ON THE THS OR IN THE REAR FUSELAGE
ON TOP OF THE WINGS OR PYLONS.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

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

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.308 and 0.252 m.daN (27.26 and 22.30 lbf.in )

B. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
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 47-31-34-740-001-A	BITE Test of the IGGS with Bleed Air
HP Air-Ground Connector Door (191DB) ** ON A/C NOT FOR ALL
HP Air-Ground Connector Door (191DB) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-42-16-860-056-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002)

Subtask 52-42-16-865-055-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17

Subtask 52-42-16-860-050-A

C. Aircraft Maintenance Configuration
(1) Make sure that the access platform is in position.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.

4. Procedure
Subtask 52-42-16-420-050-B ** ON A/C NOT FOR ALL

A. Installation of the HP Air-Ground Connector Door

HP Air-Ground Connector Door (191DB) ** ON A/C NOT FOR ALL

(1) Put the door (2) and the hinge (4) in position on the door frame.
(2) Install the door stopper (5) on the hinge (4).
(3) Install the bolts (1) and the nuts (6) and tighten them.

NOTE: Do an electrical bonding when you install the bolts (1) and the nuts (6) on each side of the hinge (4) (Ref. AMM TASK 20-28-00-912-802).

(4) Attach the spring (3) to the spring fitting (7).

Subtask 52-42-16-420-050-C ** ON A/C NOT FOR ALL

A. Installation of the HP Air-Ground Connector Door

HP Air-Ground Connector Door (191DB) ** ON A/C NOT FOR ALL

WARNING: DO NOT GO INTO THE WORK AREA UNTIL A MINIMUM OF 5 MINUTES AFTER YOU REMOVE THE ACCESS PANEL. LET AIR FLOW THROUGH THE WORK AREA. AIR FROM THIS SYSTEM HAS A LOW OXYGEN CONTENT AND CAN CAUSE INJURY OR DEATH.

(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Put the door (2) and the hinge (4) in position on the door frame.
(4) Install the door stopper (5) on the hinge (4).
(5) Install the bolts (1) and the nuts (6) and tighten them.
(6) Do an electrical bonding when you install the bolts (1) and the nuts (6) on each side of the hinge (4). (Ref. AMM TASK 20-28-00-912-802)
(7) Remove the COVER - PLASTIC from the bellow (8).
(8) Install the clamp (9) on the bellow (8).
(9) Extend smoothly the bellow (8) until the red ink mark on the outlet socket (10).
(10) Install the clamp (9) on its recorded position.
(11) TORQUE the screw of the clamp (9) to between 0.308 and 0.252 m.daN (27.26 and 22.30 lbf.in )

.
(12) Attach the spring (3) to the spring fitting (7).

Subtask 52-42-16-210-051-B

B. Check of the Door Opening/Closing
(1) Open and close the door (2).
(2) Make sure that the door (2) operates correctly.

Subtask 52-42-16-790-050-A ** ON A/C NOT FOR ALL

C. Leak Test
(1) Open the door (2) and safety it to keep it open.

NOTE: Make sure that the external outlet of the outlet socket (10) is not blocked, and that the air stream is clear.

NOTE: Do the two subsequent steps at the same time. Two persons are necessary to do these steps.

(2) Do the BITE Test of the IGGS with Bleed Air (Ref. AMM TASK 47-31-34-740-001).
(3) Examine the joints between:

the bellow (8) and the outlet socket (10),
and
the pipe area between the bellow (8) and the IGGS pallet,
for air leakage.

NOTE: Air leaks are not permitted.

5. Close-up
Subtask 52-42-16-410-050-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 door 191DB.
(3) Remove the access platform(s).

Subtask 52-42-16-410-050-B ** 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 door 191DB.

Subtask 52-42-16-865-056-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	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17

Subtask 52-42-16-860-057-A ** ON A/C NOT FOR ALL

C. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 01:45:38 UTC