3. Fault Confirmation
__________________
A. Test
(1) Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
_______________
A. If the fault symptom is identified by the crew observation: ENG 1 or 2 -Incorrect power after take off (N1 mismatch):
(1) Make sure that the PO fitting on the ECU (4000KS) is clear and not clogged.
(2) After the flight crew report, if the mismatch occurs at take off:
(a) Do the trouble shooting procedure on the engine with the lowest N1 actual.
(b) On this engine, do a check of the PS12 line to make sure that it is not cracked and/or broken.
(c) Do a PS12 line pressure check.
(3) After the flight crew report, if the mismatch occurs at climb:
(a) Do the trouble shooting procedure on the engine with the highest N1 actual.
(b) On this engine, do a check of the PS12 line to make sure that it is not cracked and/or broken.
(c) Do a PS12 line pressure check. F 『 EEFF : ALL E ∞∞73-00-00∞∞∞∞∞∞∞∞∞∞Page 227
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F 『 E C F M E E E E 56 E E E (4) Replace the Hydromechanical Unit (HMU) (Ref. AMM TASK 73-21-10-000-002) and (Ref. AMM TASK 73-21-10-400-002).
B. After the subsequent flight, make sure that the fault does not continue.
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ECES TASK 73-00-00-810-874 Engine Acceleration on Ground with no Order, on Engine 1 or 2
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1. Possible Causes
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- Hydromechanical Unit (HMU)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 71-00-00-710-006 Minimum Idle Check
AMM 73-21-10-000-002 Removal of the Hydromechanical Unit (HMU)
AMM 73-21-10-400-002 Installation of the Hydromechanical Unit (HMU)
3. Fault Confirmation
__________________
A. Test
Not applicable, the fault is evident.
4. Fault Isolation
_______________
A. If the fault symptom is identified by the crew observation: engine
acceleration on ground with no order:
(1) Make sure that the throttle control lever was in idle position during the start.
(2) Replace the Hydromechanical Unit (HMU) (Ref. AMM TASK 73-21-10-000-002) and (Ref. AMM TASK 73-21-10-400-002).
B. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).
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TASK 73-00-00-810-875
Fuel Filter Clogged Indication on Engine 1
1. Possible Causes
_______________
R - SDAC-1 (1WV1) R - SDAC-2 (1WV2)
- fuel filter element
- SW-FUEL FILTER DIFF PRESS (4000EL)
- wiring
- DMC-1 (1WT1)
- DMC-2 (1WT2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
R AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2) AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3) AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3) AMM 71-00-00-710-006 Minimum Idle Check AMM 73-11-10-000-004 Removal of the Fuel Filter Element AMM 73-11-10-210-003 Visual Inspection of the Fuel Filter Cartridge AMM 73-11-10-400-004 Installation of the Fuel Filter Element AMM 73-34-15-000-041 Removal of the Fuel Filter Differential Pressure
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