Removal of the Ram Air Turbine (RAT) Door 195CB

TASK 52-91-11-000-001-A
Removal of the Ram Air Turbine (RAT) Door 195CB

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: MAKE SURE THAT THE RAT TRAVEL RANGE IS CLEAR BEFORE YOU EXTEND/RETRACT THE RAT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

NOTE: The procedure for the removal of the RH and LH RAT compartment doors is the same.

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

REFERENCE	QTY	DESIGNATION
No specific	AR	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-22-00-869-005-A	Extension of the Ram Air Turbine (RAT) on the Ground
Ram Air Turbine (RAT) Compartment Doors 195CB ** ON A/C NOT FOR ALL
Ram Air Turbine (RAT) Door 195CB ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-91-11-860-051-A

A. Safety Precautions
(1) Put the safety barriers in position around the RAT door.
(2) Put the warning notice in position to tell persons not to pressurize the Blue hydraulic system:

in the cockpit on the hydraulic section 40VU of the overhead panel,
on the ground service panel of the Blue hydraulic system.

Subtask 52-91-11-860-050-A

B. Aircraft Maintenance Configuration
(1) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).
(2) Depressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-001).

Subtask 52-91-11-010-051-B

C. Get Access
(1) Extend the Ram Air Turbine (RAT) (Ref. AMM TASK 29-22-00-869-005)
(2) Put the COVER - PROTECTION over the blades of the RAT.

Subtask 52-91-11-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	HYD/RAT/CTL	2801GE	D14
** ON A/C NOT FOR ALL
49VU	HYD/RAT/CTL	2801GE	B13
** ON A/C ALL
106VU	CSM/G /EV/MAN/SPLY	6XE	B04
121VU	HYDRAULIC/RAT/SPLY/EXTN/SOL1	2803GE	P33

4. Procedure
Subtask 52-91-11-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the RAT Door
(1) Remove and discard the cotter pin (9).
(2) Remove the nut (8) the washer (7) the bolt (1) and the washer (2).
(3) Remove the operating door link (4) from the insert assy (10).
(4) Remove the spacer (5) and the bushes (3) and (6).
(5) Support the RAT compartment door (11).
(6) Remove the screws (12) from the piano hinge (13).
(7) Remove the RAT compartment door (11) from the structure of the belly fairing.

Subtask 52-91-11-020-050-C ** ON A/C NOT FOR ALL

A. Removal of the RAT Door
(1) Remove and discard the cotter pin (10).
(2) Remove the nut (9), the washer (8) and the bolt (6).
(3) Remove the door link (7) from the insert assy (12).
(4) Remove the screws (3) from the belly fairing structure.
(5) Remove the RAT door (13).
(6) Remove the screws (1) and the piano hinge (2) from the RAT door (13).
(7) Remove the nuts (5), the washers (4) and the screws (15).
(8) Remove the cover plate (11), the base plate (14) and the insert assy (12) from the RAT door (13).

[Rev.10 from 2021] 2026.04.02 06:28:39 UTC