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

TASK 49-16-00-810-802-A
Air-Intake Actuator Fault (131-9(A))

1. Possible Causes

INLET FLAP SHOWS FLAP OPEN AND FLAP CLOSED
INLET FLAP SHOWS FLAP OPEN SWITCH OPEN
INLET FLAP SHOWS FLAP CLOSED SWITCH OPEN
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))
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))
ASM 496101
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 49-16-00-710-052-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 OPEN AND FLAP CLOSED
or
INLET FLAP SHOWS FLAP OPEN SWITCH OPEN
or
INLET FLAP SHOWS FLAP CLOSED SWITCH OPEN

do the Fault Confirmation that follows:

(a) Do the test of the AIR INTAKE FLAP-ACTUATOR AMM 49-16-00-710-003.
(b) Get access to the APU GND SCANNING menu.

4. Fault Isolation
Subtask 49-16-00-810-051-A ** ON A/C NOT FOR ALL

A. If the APU GND SCANNING menu gives the maintenance message:

AIR INLET FLAP ACTUATOR

associated with Fault Code Number (FCN) 60, 61, 62 or 63

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 496101.

(a) If the aircraft wiring is OK:

replace the AIR INTAKE FLAP ACTUATOR (4015KM) AMM 49-16-51-000-003 and AMM 49-16-51-400-003.

(b) If the fault continues:

replace the ELECTRONIC CONTROL BOX [59KD] AMM 49-61-34-000-003 and AMM 49-61-34-400-003.

Subtask 49-16-00-710-053-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:39 UTC