Installation of the Fan Cowl Strakes [IAE]

TASK 71-13-19-400-010-B
Installation of the Fan Cowl Strakes

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

1. Reason for the Job
This TASK is for V2500-A5 Engines.

NOTE: If the fan cowl strake configuration to be installed is different from the configuration removed, refer to Service Bulletin (SB): V2500-NAC-71-0258.

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 33 and 27 lbf.in (0.37 and 0.31 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-076)	Methyl Ethyl Ketone, Technical grade
(Material No.V04-005)	jointing compound
(Material No.V08-033)	sealant
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	BOLT	AIPC 71-13-19-80-010
3	NUT	AIPC 71-13-19-80-020

E. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
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)
Fan Cowl Strakes

3. Job Set-up
Subtask 71-13-19-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the 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 the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.

Subtask 71-13-19-010-053-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 71-13-19-110-051-A ** ON A/C NOT FOR ALL

A. Remove the jointing compound

Fan Cowl Strakes ** ON A/C NOT FOR ALL

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(1) Clean the used jointing compound from the mating faces of the strake and the fan cowl door. Use a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with V01-076Methyl Ethyl Ketone, Technical grade.
(2) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) to dry the mating faces of the strake and the fan cowl door.

Subtask 71-13-19-210-051-A ** ON A/C NOT FOR ALL

B. Visually examine the strake, the area around the bolt holes in the strake and the fan cowl door for damage.

Subtask 71-13-19-420-051-A ** ON A/C NOT FOR ALL

CAUTION: IF THE FAN COWL STRAKE CANNOT BE INSTALLED FOR ANY REASON, REFER TO THE A319, A320, A321 MEL/CDL CHAPTER 51 FOR THE FLIGHT OPERATION RESTRICTIONS WHICH ARE APPLICABLE. MAINTENANCE CONTROL MUST BE NOTIFIED PRIOR TO FURTHER FLIGHT.

C. Install the fan cowl left and right strakes

NOTE: If the fan cowl that was removed had a strake installed, the replacement fan cowl must also have the same strake configuration installed. If the fan cowl strake configuration to be installed is different from the configuration removed, use SB V2500-NAC-71-0258 to install the strakes in the new configuration.

PRE SB 70-0795

(1) If necessary, remove the sealing compound from the strake fastener holes.

END OF PRE SB 70-0795

POST SB 70-0795

(2) If necessary, remove the filler plugs from the strake fastener holes.

END OF POST SB 70-0795

(3) Apply a thin bead of jointing compound (Material No.V04-005) on the mating surfaces of the left strake (1) and the fan cowl door.

NOTE: The jointing compound is not required if the left strake is fitted on the fan cowl door before painting.

(4) Install the left strake (1) on the fan cowl door while the jointing compound is still wet.

NOTE: The strake will have the "NO STEP" caution note on the top surface when correctly installed.

(5) Hold the left strake (1) in position, install the AIPC 71-13-19-80-010 BOLT (2) and the AIPC 71-13-19-80-020 NUT (3).
(6) TORQUE the nuts (2) to between 33 and 27 lbf.in (0.37 and 0.31 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(7) Wipe off the unwanted jointing compound with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
(8) Apply a fillet of sealant (Material No.V08-033) around the interface between the strake and the fan cowl.

Subtask 71-13-19-850-051-A ** ON A/C NOT FOR ALL

D. Fan Cowl Door Part Number Change

NOTE: If the fan cowl strake configuration installed is different from the configuration removed, the fan cowl door part number must be changed. Refer to SB V2500-NAC-71-0258.

(1) If necessary, amend the part number on the fan cowl door, refer to SB V2500-NAC-71-0258.

5. Close-up
Subtask 71-13-19-410-051-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)
(3) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(4) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:30:03 UTC