Installation of the Fan-Cowl Door Latch [IAE]

TASK 71-13-13-400-803-A
Installation of the Fan-Cowl Door Latch

1. Reason for the Job

NOTE: SBN71-0331 (equivalent to Airbus service bulletin SB 71-1069) introduces a lockable latch in the forward position (latch No. 1) that must be opened and closed and locked with a key and flag assembly. The key and flag assembly are stowed in the cockpit and must not be used if there is damage to the key or flag.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
1	SPLIT PIN	AIPC 71-13-13-81-040

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-800-010-A	Functional Check of Fan Cowl Latch Tension
TASK 71-13-00-800-012-A	Adjustment of the Fan Cowl Latches
TASK 71-13-13-400-804-A	Installation of the Fan-Cowl Door Keeper
Fan-Cowl Door Latch

3. Job Set-up
Subtask 71-13-13-860-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 71-13-13-010-064-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 71-13-13-210-051-A ** ON A/C NOT FOR ALL

C. Make sure that the latch housing (6) has no damage.

Fan-Cowl Door Latch ** ON A/C NOT FOR ALL

4. Procedure
Subtask 71-13-13-420-058-B ** ON A/C NOT FOR ALL

A. Installation of the Latch in the Latch Housing

PRE SBN71-0256

(1) Install the latches (5) and the anti-swivel plates (4) on the latch housings (6) in the correct position for installation with the pins (3) and collars (2).
(2) Safety the pins (3) with a new AIPC 71-13-13-81-040 SPLIT PIN (1).

END OF PRE SBN71-0256

POST SBN71-0256

(3) Install the latches 1 and 2 (5) and the anti-swivel plates (7) on the latch housings (6) in the correct position for installation with the pins (3) and collars (2).
(4) Install the latches 3 and 4 (5) and the anti-swivel plates (8) on the latch housings (6) in the correct position for installation with the pins (3) and collars (2).
(5) Safety the pins (3) with a new AIPC 71-13-13-81-040 SPLIT PIN (1).

END OF POST SBN71-0256

(6) Install the lockable latch No. 1 (5) and the anti-swivel plate (8) on the latch housing (6) in the correct position for installation with the pin (3) and the collar (2).

NOTE: The lockable latch (5) must be installed in the number 1 position with the correct keeper (Ref. AMM TASK 71-13-13-400-804). Do not install the lockable latch unless there is a key and flag assembly available on the aircraft.

(7) Install the latch No. 2 (5) and the anti-swivel plate (7) on the latch housing (6) in the correct position for installation with the pin (3) and the collar (2).
(8) Install the latches No. 3 and 4 (5) and the anti-swivel plates (4) on the latch housings (6) in the correct position for installation with the pins (3) and the collars (2).
(9) Do a check of the in-to or out-of wind step of the latch handles (Ref. AMM TASK 71-13-00-800-012).

5. Close-up
Subtask 71-13-13-410-060-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Do a check of the latch tension (Ref. AMM TASK 71-13-00-800-010).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:56:19 UTC