14.
On the RAT ground control-panel 3GE:
-set the 28VDC switch to the OFF position.
15.
Depressurize the Blue hydraulic system (Ref. TASK 29-10-00-864-003).
16.
At the RAT leg assembly:
-make sure that the RAT filter indicator is in the IN position.
-
the RAT extends.
On the glareshields:
-
the MASTER CAUTION lights come on and you can hear a single chime.
On the HYD page of the lower ECAM DU:
-
the RAT triangle symbol changes to green when the RAT is fully extended.
On the upper ECAM DU:
-
the legends RAT FAULT and RAT OUT are shown in amber.
On the RAT ground control-panel 3GE:
-
the green RAT stowed light goes off.
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B. Inspection of the Index Locking Mechanism
(1)
When the RAT is fully retracted in its stowage position install the safety device (Ref. TASK 29-22-00-860-007).
(2)
Move the propeller blades slightly by hand.
(3)
Make sure that the plunger of the index locking mechanism is fully engaged and no further movement of the propeller is possible.
(4)
If the plunger does not engage fully remove the safety device (Ref. TASK 29-22-00-860-008) and extend and retract the RAT again, see above, and repeat steps (1) thru (3).
(5)
If the plunger once again does not engage fully, you must replace the RAT (Ref. TASK 29-22-51-000-010) and (Ref. TASK 29-22-51-400-010).
(6)
Make sure that the safety device is removed (Ref. TASK 29-22-00-860-008).
5. Close-up
________ Subtask 29-22-00-860-109
A. Aircraft Maintenance Configuration
(1)
Do the EIS stop procedure
(Ref. TASK 31-60-00-860-001).
(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 29-22-00-410-077
B. Close Access
(1)
Remove the safety barriers.
(2)
Make sure that the work area is clean and clear of tool(s) and other items.
(3)
Close the access door 197EB.
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Operational Check of RAT Manual Deployment and Functional Check of RAT using Ground Test Unit, followed by Check of Filter Indicator
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.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______ CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
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.
1. Reason for the Job
__________________
Refer to the MPD TASK: 292000-08
NOTE : It is permitted to use the tools Part Numbers AGE11212 and AE89415Z
____
as an alternative to the tool Part Number HFK02.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific hydraulic ground-power cart (reservoir capacity min.
150 l). No specific safety barriers No specific warning notice(s) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN) AE89415Z 1 RAT - FLOW CONTROL TEST KIT AGE10600C 1 CHECK - MOTOR GROUND, RAT AGE11212 1 GROUND - CHECKOUT UNIT, RAT HFK02 1 FLOW CONTROL TEST KIT - RAT
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-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
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