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TMUHYDP01 LEVEL 3
EFFECTIVITY 29-16-00 Page 4
Oct 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 208
ALL
29 - HYDRAULIC POWER
29-22-00 RAT STOWAGE AND SERVICING
CONTENTS:
Safety Precautions
Extension Procedure
Retraction Procedure
TMUHYAE04 LEVEL 2
EFFECTIVITY 29-22-00 Page 1
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 209
ALL
RAT STOWAGE AND SERVICING
SAFETY PRECAUTIONS
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 SAFETY-LOCKS ARE IN
POSITION ON THE LANDING GEAR.
WARNING: MAKE SURE THAT THE RAT TRAVEL RANGE IS CLEAR
BEFORE YOU EXTEND THE RAT.
WARNING: PLACE SAFETY BARRIERS IN POSITION AND FIT THE
RAT PROTECTIVE EQUIPMENT AS PER AMM
PROCEDURE.
WARNING: DO NOT STAND IN FRONT OF OR BESIDE THE RAT
PROPELLER ASSEMBLY DURING THE FUNCTIONAL
TEST.
Note: Do not operate the RAT deployment solenoids for
more than 60 sec. You can operate them more than
once, but you must then let them cool down for
30 min.
EXTENSION PROCEDURE
The aircraft being electrically supplied, the RAT can
be extended either by pressing in the RAT MAN ON
pushbutton on the hydraulic panel or by pressing in
the MAN ON/AUTO switch on the ELEC EMER PWR panel.
Note: a second person must examine the extension of
the RAT.
TMUHYAE04-T01 LEVEL 2
EFFECTIVITY 29-22-00 Page 2
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 210
ALL
RAT STOWAGE AND SERVICING - EXTENSION PROCEDURE
TMUHYAE04-P01 LEVEL 2
EFFECTIVITY 29-22-00 Page 3
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 211
ALL
RAT STOWAGE AND SERVICING
RETRACTION PROCEDURE
- Energize the aircraft electrical circuits.
- Pressurize the Blue hydraulic system.
- Make sure that the circuit breaker 49VU
HYDRAULIC/RAT/CTL is closed.
- Remove the protective cover from the turbine blades.
- Turn the turbine blade with your hands until the
arrows on the turbine hub and the gearbox are aligned.
- Set the Arm switch to ON on the RAT ground control
panel.
- Move the STOW/RESET switch to the STOW position and
hold it until the green RAT stowed indicator light
comes on .
- During RAT retraction the red pressure light comes
on.
- When the RAT is retracted and locked, the green light
comes on.
- Release the STOW/RESET switch, the red pressure light
goes OFF.
- Set the ARM switch to OFF, the green RAT stowed light
goes OFF.
- If the aircraft stays on the ground for maintenance,
install the RAT safety device.
Note: if the interlock mechanism is triggered or if
the stow switch is released before the RAT is
fully retracted, the RAT will return to the fully
extended position.
TMUHYAE04-T02 LEVEL 2
EFFECTIVITY 29-22-00 Page 4
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 212
ALL
TMUHYAE04-P02 LEVEL 2
RAT STOWAGE AND SERVICING - RETRACTION PROCEDURE
EFFECTIVITY 29-22-00 Page 5
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 213
ALL
THIS PAGE INTENTIONALLY LEFT BLANK.
TMUHYAE04 LEVEL 2
EFFECTIVITY 29-22-00 Page 6
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 214
ALL
29 - HYDRAULIC POWER
29-22-00 RAT TEST
CONTENTS:
Precautions
Ground Checkout Unit Presentation
Rat Ground Test Motor Presentation
Flow Control Test Kit Presentation
Test Operation (Main Steps)
TMUHYDU03 LEVEL 3
EFFECTIVITY 29-22-00 Page 1
Jun 30/96
_A319/A320/A321 TECHNICAL TRAINING MANUAL
　
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