W DOC AIRBUS | TSM A320F

Air-Intake Flap-Actuator Fault (131-9(A))

TASK 49-00-81-810-857-A
Air-Intake Flap-Actuator Fault (131-9(A))

1. Possible Causes
  • INLET FLAP SHOWS FLAP CLOSE CIRCUIT OPEN
  • INLET FLAP SHOWS FLAP CLOSE CIRCUIT SHORT
  • INLET FLAP SHOWS FLAP OPEN CIRCUIT OPEN
  • INLET FLAP SHOWS FLAP OPEN CIRCUIT SHORT
  • INLET FLAP SHOWS FLAP CLOSE HIGH CURRENT
  • INLET FLAP SHOWS FLAP FAILED TO FULLY CLOSE
  • damage/contamination of the electrical connector 7527VC
  • aircraft wiring
  • AIR INTAKE FLAP ACTUATOR (4015KM)
  • ELECTRONIC CONTROL BOX [59KD]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 49-16-00-710-003
Operational Test of the Air Intake Flap and Diverter (131-9(A))
ASM 491601
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))
3. Fault Confirmation
Subtask 49-00-81-710-064-A ** ON A/C NOT FOR ALL
A. Read-out of ECB Trouble-Shooting Data
   (1) Put the APU MASTER SW to the ON position.
   (2) Get access to the APU LAST LEG/PREVIOUS LEG report.
   (3) Push the '>' adjacent to the related CFDS failure message:
  • the MCDU menu shows:
    INLET FLAP SHOWS FLAP CLOSE CIRCUIT OPEN
    or
    INLET FLAP SHOWS FLAP CLOSE CIRCUIT SHORT
    or
    INLET FLAP SHOWS FLAP OPEN CIRCUIT OPEN
    or
    INLET FLAP SHOWS FLAP OPEN CIRCUIT SHORT
    or
    INLET FLAP SHOWS FLAP CLOSE HIGH CURRENT
    or
    INLET FLAP SHOWS FLAP FAILED TO FULLY CLOSE
   (4) Get access to the APU GND SCANNING menu.
4. Fault Isolation
Subtask 49-00-81-810-059-A ** ON A/C NOT FOR ALL
A. If the APU GND SCANNING menu gives the maintenance message:

AIR INTAKE FLAP ACTUATOR

associated with Fault Code Numbers (FCN) 64, 65, 66, 67, 69 or 72

  • 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
    ASM 491601.
     (a) If the aircraft wiring is OK:
     (b) If the fault continues:
Subtask 49-00-81-810-059-B ** ON A/C NOT FOR ALL
A. If the APU GND SCANNING menu gives the maintenance message:

AIR INTAKE FLAP ACTUATOR (4015KM)

associated with Fault Code Numbers (FCN) 64, 65, 66, 67, 69 or 72

  • 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.
   (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
    ASM 491601.
     (a) If the aircraft wiring is OK:
     (b) If the fault continues:
Subtask 49-00-81-710-065-A ** ON A/C NOT FOR ALL
B. Do the operational test of the AIR INTAKE FLAP-ACTUATOR AMM 49-16-00-710-003.
[Rev.8 from Aug 2018] 2026.04.04 04:34:36 UTC
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