Installation of the Right Fan Cowl (438AR, 448AR) [IAE]

TASK 71-13-16-400-010-B
Installation of the Right Fan Cowl (438AR, 448AR)

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

WARNING: DO NOT INSTALL THE FAN COWL(S) WHEN THE WIND SPEED IS 60mph (96km/h) OR MORE. INJURY AND/OR DAMAGE TO THE ENGINE CAN OCCUR IF THE WIND MOVES THE FAN COWL(S).

WARNING: BE CAREFUL IF YOU INSTALL THE FAN COWL(S) WHEN THE WIND SPEED IS 30mph (48kmh) OR MORE. INJURY AND/OR DAMAGE TO THE ENGINE CAN OCCUR IF THE WIND MOVES THE FAN COWL(S).

WARNING: BE CAREFUL DURING THE REMOVAL OR INSTALLTION OF THE RIGHT FAN COWL. IT WEIGHS 103lb (47kg). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

CAUTION: SBN71-0331 (EQUIVALENT TO AIRBUS SERVICE BULLETIN SB 71-1069) INTRODUCES A LOCKABLE LATCH IN THE NUMBER 1 POSITION. THUS, WHEN YOU INSTALL A NEW COWL DOOR, MAKE SURE THAT THE KEEPER IS INSTALLED WITH THE CORRECT LATCH ON THE FAN COWL DOOR. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE CAN OCCUR.

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This TASK is for V2500-A5 engines. also have a strake installed.

NOTE: SBN71-0331 (equivalent to Airbus sevice 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 is stowed in the cockpit and must not be used if there is damage to the key or flag.

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	2	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	2	HOIST 100 KG (220 LB)
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 38.5 and 31.5 lbf.in (0.44 and 0.36 m.daN )
745-4001-1GSE	1	FAN COWL SLING
OR	OR
IAE1N20404	1	SLING-FAN COWL DOORS
IAE1N20402	1	DOLLY-FAN COWL DOORS

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.V02-099)	lint free cloth

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
7	NUT, SELF LOCKING	AIPC 71-13-16-80-050

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-869-002-A	Table of the Maximum Permitted Resistance-Values
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)
TASK 71-13-00-800-010-A	Functional Check of Fan Cowl Latch Tension
TASK 71-13-16-000-010-B	Removal of the Right Fan Cowl (438AR, 448AR)
TASK 72-61-49-400-010-B	Installation of the Gearbox Breather Outlet Duct (GBOD)
Right Fan Cowl

3. Job Set-up
Subtask 71-13-16-860-053-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 71-13-16-010-058-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

Subtask 71-13-16-480-053-A ** ON A/C NOT FOR ALL

C. Attach the Sling
(1) Remove the caps (4) from the right fan-cowl sling-points.

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

(2) Attach the IAE1N20404 SLING-FAN COWL DOORS745-4001-1GSE FAN COWL SLING (1) to the HOIST 100 KG (220 LB) and the right fan cowl 438AR (448AR) (3).

Subtask 71-13-16-080-054-A ** ON A/C NOT FOR ALL

D. Remove the right fan cowl (3) from the IAE1N20402 DOLLY-FAN COWL DOORS with the IAE1N20404 SLING-FAN COWL DOORS745-4001-1GSE FAN COWL SLING and the hoist.

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

Subtask 71-13-16-110-054-A ** ON A/C NOT FOR ALL

E. Clean the Fan Cowl:
(1) Clean the right fan cowl hinges (6) and the pylon hinges with a lint free cloth (Material No.V02-099) made moist cleaning fluid (Material No.V01-002) .

Subtask 71-13-16-210-052-A ** ON A/C NOT FOR ALL

F. Examine the right fan cowl hinges (6) and the pylon hinges and make sure that they have no damage.

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

4. Procedure
Subtask 71-13-16-420-053-A ** ON A/C NOT FOR ALL

A. Install the Right Fan Cowl

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

CAUTION: BE CAREFUL WHEN YOU REMOVE/INSTALL THE BOLTS THAT HOLD THE FAN COWL DOOR IN POSITION. IF THE DOOR IS NOT HELD CORRECTLY, DAMAGE CAN OCCUR.

(1) Lift the fan cowl (3) with the IAE1N20404 SLING-FAN COWL DOORS745-4001-1GSE FAN COWL SLING and the HOIST 100 KG (220 LB) and install it at the pylon.
(2) Align the fan cowl hinges (6) with the pylon hinges.
(3) Install the bolts (5) to the right fan-cowl hinges (6) and the pylon hinges.

NOTE: Make sure that each bolt is installed in the same position and direction as written in the removal task (Ref. AMM TASK 71-13-16-000-010).

(4) Install the washers (8) and new 71131680-050NUT, SELF LOCKING7 on to the bolts (5).
(5) TORQUE the nuts (7) to between 38.5 and 31.5 lbf.in (0.44 and 0.36 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

NOTE: The nuts (7) are supplied lubricated. More lubrication is not necessary.

Subtask 71-13-16-080-055-A ** ON A/C NOT FOR ALL

B. Remove the Sling

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

(1) Lower the right fan cowl.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(3) Remove the IAE1N20404 SLING-FAN COWL DOORS745-4001-1GSE FAN COWL SLING.
(4) Install the caps (4) in to the fan-cowl sling points.

Subtask 71-13-16-200-051-A ** ON A/C NOT FOR ALL

C. Check Electrical bonding
(1) Make sure that the resistance value (Ohmic) between the fan cowl door hinge and the pylon is correct (Ref. AMM TASK 20-28-00-869-002).

Subtask 71-13-16-820-051-A ** ON A/C NOT FOR ALL

D. Make sure that the fan cowl latches are aligned (Ref. AMM TASK 71-13-00-800-010).
(1) Make sure that the gearbox breather outlet duct (GBOD) aligns with the gearbox breather outlet vent on the RH fan cowl. If it does not align, loosen the GBOD fasteners, align the GBOD with the vent, and torque the fasteners (Ref. AMM TASK 72-61-49-400-010).

5. Close-up
Subtask 71-13-16-410-053-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 WARNING NOTICE(S).
(6) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 12:49:22 UTC