NOTE : The LGCIU which is thought to be unserviceable can be used
____ again on the next flight, if it is in the System 2 position.
 (3) Make a record in the aircraft log to do a check for FAULT codes H138 and H146, after the subsequent flight.

 (4) If the same fault code has been recorded before, on the LGCIU with the same serial number, replace that unserviceable LGCIU-1 (5GA1) or LGCIU-2 (5GA2), (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page A216
 Aug 01/05R
 CES

 TASK 32-31-00-810-853

 L/G Doors Uncommanded Opening in Flight
 1. Possible Causes
_______________
 - RELAY-GND SERVICE BUS CHG OVER (53GA)

 - RELAY-HYDRAULIC CONTROL (48GA)

 - SAFETY VALVE-L/G SYS ISOLATION (49GA)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-31-00-720-005 Functional Test of the MLG Safety Valve Solenoid AMM 32-31-17-000-001 Removal of the Landing Gear Safety-Valve AMM 32-31-17-400-001 Installation of the Landing Gear Safety-Valve ASM 32-31/05 ASM 32-31/07
 3. Fault Confirmation
__________________
 A. Test
 (1) If the landing gear doors have opened in flight when not commanded:
 - Do the functional test of the MLG safety valve solenoid (Ref. AMM TASK 32-31-00-720-005).
 4. Fault Isolation
_______________
 A. Procedure
 (1) If the safety valve failed the test in Para. 3. A., replace the components that follow:

 (a) RELAY-GND SERVICE BUS CHG OVER (53GA) (Ref. ASM 32-31/05).

 (b) RELAY-HYDRAULIC CONTROL (48GA) (Ref. ASM 32-31/07).

 (c) SAFETY VALVE-L/G SYS ISOLATION (49GA) (Ref. AMM TASK 32-31-17-000-001) and (Ref. AMM TASK 32-31-17-400-001).

 (2) After the subsequent flight, make sure that the fault does not continue.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page A217
 Aug 01/05R
 CES

 TASK 32-31-00-810-854

 L/G Proximity Sensor TGT POS Fault
 1. Possible Causes
_______________
 - LGCIU-1 (5GA1)

 - LGCIU-2 (5GA2)

 - Proximity Sensor and Target Clearances

 - Proximity Sensor

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific multimeter
 No specific 50Vdc Isolation Tester

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-31-00-710-002 Operational Test of the Landing Gear Doors
 AMM 32-31-00-710-002 Operational Test of the Landing Gear Doors
 AMM 32-31-00-720-002 Functional Test of the Normal Extension and

 Retraction of the Landing Gear
 AMM 32-31-00-720-003 Functional Test of the Normal Extension and

 Retraction of the Nose Landing Gear AMM 32-31-14-000-001 Removal of the NLG Door Uplock Assy (2534GM) AMM 32-31-14-400-001 Installation of the NLG Door Uplock Assy (2534GM) AMM 32-31-21-000-001 Removal of the NLG Uplock Assy (2530GM) AMM 32-31-21-400-001 Installation of the NLG Uplock Assy (2530GM) AMM 32-31-33-000-001 Removal of the MLG Door Uplock 2521GM (2520GM) AMM 32-31-33-400-002 Installation of the MLG Door Uplock 2521GM (2520GM) AMM 32-31-44-000-001 Removal of the MLG Uplock Assembly 2509GM (2510GM) AMM 32-31-44-400-001 Installation of the MLG Uplock Assembly 2509GM
 (2510GM)
 AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2)
 AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2)
 AMM 32-31-73-000-001 Removal of the Proximity-Sensors 9GA(8GA),

 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA), 35GA(34GA)
 AMM 32-31-73-000-005  Removal of the NLG Proximity-Sensors 12GA, 13GA, 18GA, 19GA, 24GA, 25GA, 30GA, 31GA, 37GA (36GA), 39GA (38GA)
　
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