TASK 49-00-81-810-828
APU AUTO SHUTDOWN - AIR INTAKE NOT OPEN, Air Intake Fault (131-9(A))
1. Possible Causes
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- INLET FLAP SHOWS FLAP LOSS OF OPEN INDICATION
- INLET FLAP SHOWS FLAP FAILED TO OPEN
- INLET FLAP SHOWS FLAP CLOSE CIRCUIT OPEN
- INLET FLAP SHOWS FLAP OPEN HIGH CURRENT
- damage/contamination of the electrical connector 7527VC
- aircraft wiring
- AIR INTAKE FLAP ACTUATOR (4015KM)
- ECB (59KD)
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 49-00-00-860-008 APU Start by External Power (131-9(A))
AMM 49-16-51-000-003 Removal of the Air-Intake Flap Actuator (131-9(A))
AMM 49-16-51-400-003 Installation of the Air-Intake Flap Actuator
(131-9(A)) AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A)) ASM 49-61/01
3. Fault Confirmation
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A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU SHUTDOWN report.
(3) Push the '>' adjacent to LRU DATA:
- the MCDU menu shows INLET FLAP SHOWS FLAP LOSS OF OPEN INDICATION or INLET FLAP SHOWS FLAP FAILED TO OPEN or INLET FLAP SHOWS FLAP CLOSE CIRCUIT OPEN or INLET FLAP SHOWS FLAP OPEN HIGH CURRENT
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 278
201-210, Config-1 Aug 01/05 CES
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
4. Fault Isolation
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R **ON A/C 001-049, 101-105, 107-107, 151-154, 201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
AIR INTAKE NOT OPEN
AIR INTAKE FLAP ACTUATOR
associated with Fault Code Numbers (FCN) 64, 65, 68, 70 or 71
- do a check for damage/contamination of the electrical connector 7527VC of the AIR INTAKE FLAP-ACTUATOR.
(1) If the electrical connector 7527VC is damaged/contaminated:
- do a repair/cleaning.
(2) If the electrical connector 7527VC is OK:
- do a check and repair of the aircraft wiring from the ECB (59KD) AC/5,4 to the electrical connector 7527VCA/J,K and the ECB (59KD) AB/G2,G3,G4,G5 to the electrical connector 7527VCA/D,C,E,B and the electrical connector 7527VCA/A,L,F, to GND (Ref. ASM 49-61/01).
(a) If the aircraft wiring is OK:
- replace the AIR INTAKE FLAP ACTUATOR (4015KM) (Ref. AMM TASK 49-16-51-000-003) and (Ref. AMM TASK 49-16-51-400-003).
(b) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
**ON A/C 001-049, 101-105, 151-199, 201-210,
Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
AIR INTAKE NOT OPEN
AIR INTAKE FLAP ACTUATOR (4015KM)
associated with Fault Code Numbers (FCN) 64, 65, 68, 70 or 71
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 279
201-210, Config-1 Aug 01/05 CES
- do a check for damage/contamination of the electrical connector 7527VC of the AIR INTAKE FLAP-ACTUATOR (4015KM).
(1) If the electrical connector 7527VC is damaged/contaminated:
- do a repair/cleaning.
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