-
releases the gear uplocks.
Gravity and aerodynamic moments:
-extend the landing gears
- open the landing gear doors.
The landing gear doors stay open, when the landing gear is extended and locked down by the lock springs.
The normal extension and retraction control is available when the
free-fall handle-assembly is put back to its initial position.
C. Indicating
(1) Normal extension and retraction
The L/G position indications are given on:
-
the WHEEL page of the Systems Display Unit
-
the L/G downlock indicator lights on panel 402VU.
If a failure of the L/G operation occurs, a failure warning message shows on the Engine Warning Display Unit. When the specified failure-warning messages show, an aural and visual warning is also given (Ref. 32-61-00).
1EFF : ALL 1 32-30-00Page 13 1 1 May 01/05 1 1 1CES 1 (2) Free fall extension
There is no specified indicating system in this mode. The indications are the same as for the normal extension and retraction system.
8. BITE Test_________
A. Normal Extension and Retraction System
Each LGCIU has BITE (Ref. 32-69-00). The BITE (hardware and software) makes it possible for each LGCIU to :
-continuously monitor itself and its related electrical system for failure
-keep a record of failure data and transmit this data to the CFDS
-do a BITE test (during maintenance)
-simulate different L/G configurations (during maintenance).
1EFF : ALL 1 32-30-00Page 14 1 1 May 01/05 1 1 1CES 1 EXTENSION AND RETRACTION - MAINTENANCE PRACTICES
________________________________________________
TASK 32-30-00-867-001
Retraction of the Landing Gear for Maintenance
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 GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
1. Reason for the Job
__________________
R To retract the landing gear with the landing gear doors kept open.
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 ground hydraulic cart
No specific safety barriers
No specific warning notice
D23080000 1 PIN-NLG DOWNLOCK SAFETY
460005833 1 GROUND LOCK SLEEVE
460005835 1 GROUND LOCK SLEEVE
460007280 1 GROUNDLOCK SLEEVE
98D32203502000 1 SAFETY PIN - NLG DOOR
1EFF : ALL 1 32-30-00Page 201 1 1 Feb 01/04 1 1 1CES 1
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
07-11-00-581-001 Lifting for Aircraft Maintenance Operations 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-10-00-863-001 Pressurize the Green Hydraulic System 29-10-00-864-001 Depressurize the Green Hydraulic System 29-10-00-864-002 Depressurize the Yellow Hydraulic System 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power
Transfer Unit (PTU) 32-00-00-481-001 Installation of the Safety Devices on the Landing Gears 32-00-00-481-002 Installation of the Safety Devices on the Landing
Gear Doors
32-00-00-860-001 Flight Configuration Precautions
32-12-00-010-001 Open the Main Gear Doors for Access
32-22-00-010-001 Nose Gear Doors - Ground Doors Opening
3. Job Set-up
__________
Subtask 32-30-00-941-053
A. Safety Precautions
(1) Put the safety barriers in position.
R (2) Make sure that the ground safety locks are on the landing gear R (Ref. TASK 32-00-00-481-001).
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