Deactivation of the HP Air-Ground Connector Door

TASK 47-20-00-040-002-A
Deactivation 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.

Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
NO	NO	NO	0.7	0.7	1

1. Reason for the Job
CDL 52-20
Access Door to HP Air Ground Connector 191 DB
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	1	LIGHT SOURCE - WHITE
No specific	1	MIRROR - INSPECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Referenced Information

REFERENCE	DESIGNATION
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 52-42-16-000-001-A	Removal of the HP Air-Ground Connector Door
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A	Installation of the Quick-Release Access Panels on the Belly Fairing Structure
Bellow OEA Outlet

3. Job Set-up
Subtask 47-20-00-860-054-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)

Subtask 47-20-00-865-054-A ** ON A/C NOT FOR ALL

B. Open, safety and tag 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 47-20-00-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) in position at zone 191.
(2) Remove the HP Air-Ground Connector Door (191DB) (Ref. AMM TASK 52-42-16-000-001)
(3) Remove the access panel 191BB (Ref. AMM TASK 53-35-13-000-002)

4. Procedure
Subtask 47-20-00-020-051-A ** ON A/C NOT FOR ALL

A. Deactivation of the HP Air-Ground Connector Door (191DB)

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) Record the position of the clamp (2) on the bellow OEA outlet (bellow) (3).
(2) Loosen the screw of the clamp (2).
(3) Remove the bellow (3) and the clamp (2) from the pipe assy CPL (pipe) (1).

Subtask 47-20-00-210-051-A ** ON A/C NOT FOR ALL

B. General Visual Inspection
(1) If the HP Air-Ground Connector Door (191DB) fell during a flight, examine

the pipe (1) area
and
the assembly of the HP Air-Ground Connector Door (191DB) to the access panel 191BB,
for damage on the structure, equipments and electrical harnesses.

NOTE: Use a MIRROR - INSPECTION and a LIGHT SOURCE - WHITE if necessary.

(2) Make sure that the work area is clean and clear of tools and other items.
(3) Make an entry in the log book to record that

the bellow (3) is removed,
and
the HP Air-Ground Connector Door (191DB) is deactivated.

5. Close-up
Subtask 47-20-00-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the access panel 191BB (Ref. AMM TASK 53-35-13-400-002)

Subtask 47-20-00-865-055-A ** ON A/C NOT FOR ALL

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 47-20-00-860-055-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] 2026.04.02 06:26:18 UTC