BLUE AUXILIARY HYDRAULIC POWER (RAM AIR TURBINE) - REPAIRS
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R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
TASK 29-22-00-300-001
Repair of the Blades of the Ram Air Turbine
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
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START A TASK ON OR NEAR:
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THE FLIGHT CONTROLS
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THE FLIGHT CONTROL SURFACES
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THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
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CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : MAKE SURE THAT THE RAT TRAVEL RANGE IS CLEAR BEFORE YOU
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EXTEND/RETRACT THE RAT.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
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GEAR.
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL MATERIALS
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ONLY WITH A GOOD SUPPLY OF AIR.
OBEY THE MANUFACTURERS INSTRUCTIONS.
PUT ON PROTECTIVE CLOTHING.
DO NOT GET THEM IN YOUR MOUTH.
DO NOT SMOKE.
DO NOT BREATHE THE GAS.
THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT.
GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
WARNING : DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
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-FLUSH IT AWAY WITH CLEAN WATER
-GET MEDICAL AID.
1. Reason for the Job
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This repair procedure is only applicable for RAM AIR TURBINES with Aluminum
RAT Blades. It is not permitted to use this repair procedure for plated
Carbon-Fiber RAT Blades.
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2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific warning notice(s)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific abrasive paper grade 400 Material No. 11-010 USA TT-I-735 GRADE A
ISOPROPYL ALCOHOL (Ref. 20-31-00) Material No. 13-002 USA MIL-C-5541 MIL-C-81706 CLASS I/A
CHEMICAL CONVERSION COATING YELLOW ALUMINUM
(Ref. 20-31-00) Material No. 19-003 USA AMS 3819
LINT-FREE COTTON CLOTH (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-22-00-210-001 Visual Inspection of the RAT Blades 29-22-00-869-005 Extension of the Ram Air Turbine (RAT) on the Ground 29-22-00-869-006 Retraction of the Ram Air Turbine (RAT) on the Ground 29-22-00-991-029 Fig. 801
3. Job Set-up
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Subtask 29-22-00-869-084
A. Extend the Ram Air Turbine (RAT) (Ref. TASK 29-22-00-869-005).
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B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/RAT/CTL 2801GE D14 106VU CSM/G /EV/MAN/SPLY 6XE B04 121VU HYDRAULIC/RAT/SPLY/EXTN/SOL1 2803GE P33
Subtask 29-22-00-941-073
C. Put the warning notice(s) in position to tell persons not to operate the RAT: - on the overhead panels 21VU and 40VU, - on the RAT ground control panel 3GE.
4. Procedure
_________ (Ref. Fig. 801/TASK 29-22-00-991-029) Subtask 29-22-00-160-052
A. Cleaning of the Repair Area of the RAT Blades
(1) Clean the repair area of the RAT blade with CLEANING AGENTS (Material No. 11-010) to remove all contamination.
Subtask 29-22-00-330-050
B. Repair of the Aluminum RAT Blades
(1)
Repair of the damage in the area C.
(a) Damage in the area C which are less than the limits is acceptable without a repair (Ref. TASK 29-22-00-210-001).
(2)
Repair of the damage on the surface of the areas A, B, D.
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