Installation of the Fan Cowl Doors [CFML]

TASK 71-13-11-400-806-A
Installation of the Fan Cowl Doors

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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

WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.

CAUTION: MAKE SURE THAT AT OPEN POSITION, THE WEIGHT OF THE FAN COWL DOOR IS SUPPORTED BY THE SLING-FC POSITION.

CAUTION: DO NOT EXTEND THE SLATS WHEN THE FAN COWLS AND THE THRUST REVERSER COWLS ARE OPEN. IF YOU DO THIS, DAMAGE TO THE AIRCRAFT CAN OCCUR.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 210
ZONE: 400
FIN: 1400KM1
FIN: 1400KM2
FIN: 1410KM1
FIN: 1410KM2

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	MAT - PROTECTIVE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
No specific	Torque wrench: range to between 1.79 and 1.38 m.daN (13.20 and 10.18 lbf.ft )
No specific	Torque wrench: range to between 2.24 and 1.79 m.daN (16.52 and 13.20 lbf.ft )
98N7110H001-000	1	FAN COWL HOISTING DEVICE
98N7110H002-000	1	FAN COWL DOLLY
98N7110H003-000	1	FAN COWL PROTECTION BULLETS KIT

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CPNCL00338)	MASTINOX D40
(Material No.CPNCL00700)	ELECTRICAL BONDING COATING (BLUE COLOR)
(Material No.CPNCL01420)	SEALANT LOW DENSITY-FUEL TANK & GP
(Material No.CPNCL02069)	LINT-FREE COTTON CLOTH
(Material No.CPNCL02589)	GENERAL CLEANING AGENT - MULTI PURPOSE

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
36	COTTER PIN	AIPC 71-13-10-10-720
36	COTTER PIN	AIPC 71-13-11-10-130
17	PIN	AIPC 71-13-80-01-080
24	PIN	AIPC 71-13-80-01-120

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 71-13-00-440-817-A	Activation of the Flag (Installation of the Fan Cowl Door, Left Hand Side (LHS))
TASK 71-13-11-820-802-A	Adjustment of the Fan Cowl Doors Clearance
TASK 71-13-12-400-803-A	Installation of the Forward Fan Cowl Hold Open Rod
TASK 71-13-13-720-803-A	Operational Test of the Fan Cowl Loss Prevention System
TASK 71-13-13-820-801-A	Adjustment of the Fan Cowl Door Latches
TASK 71-13-15-400-802-A	Installation of the Fan Cowl Strake
TASK 71-13-46-400-802-A	Installation of the F1 Hinge Beam
Tooling
Electrical Devices
Fan Cowl Door
Forward Hold Open Rod (HOR)

3. Job Set-up
Subtask 71-13-11-941-085-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 71-13-11-865-054-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
121VU	ENGINE/LATCH DOORS & SLATS/ENG1	93KS1	P39
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
121VU	ENGINE/LATCH DOORS & SLATS/ENG2	93KS2	P40

4. Procedure
Subtask 71-13-11-020-066-A

A. Removal of the Filler Plugs
(1) Remove the filler plugs (1) from the lower hoist points of the fan cowl door. Keep the plugs for installation when the task is completed.
(2) Remove the filler plugs (1) from the upper hoist points of the fan cowl door. Keep the plugs for installation when the task is completed.

Subtask 71-13-11-480-057-A

B. Installation of the Tooling
(1) Put the sling fan cowl (3) in position on the fan cowl door.

NOTE: The sling fan cowl (3) is part of the 98N7110H001-000 FAN COWL HOISTING DEVICE.

(2) Install the pad universal attach (5) on the hoist points of the fan cowl door with the pad universal attach screw (4).

NOTE: The pad universal attach (5) and (4) are parts of the 98N7110H001-000 FAN COWL HOISTING DEVICE.

Subtask 71-13-11-420-065-A

C. Installation of the Fan Cowl Door
(1) Lift the fan cowl door from the 98N7110H002-000 FAN COWL DOLLY and put it in the engine area.
(2) On the fan cowl internal zone, put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(3) Gain access to the hinge points.
(4) Install the hinge bolt in the sequence middle, aft and forward as follows:

CAUTION: OBEY THE SEQUENCE GIVEN FOR THE REMOVAL/INSTALLATION OF THE HINGE BOLTS. IF YOU DO NOT OBEY THE SEQUENCE, DAMAGE TO THE EQUIPMENT CAN OCCUR.

(a) Installation of the middle hinge bolt.
1 Use the 98N7110H003-000 FAN COWL PROTECTION BULLETS KIT to screw the bullet (thread protector) (27) to the middle hinge bolt (29).

NOTE: In the 98N7110H003-000 FAN COWL PROTECTION BULLETS KIT use item 200 for the middle hinge bolt (29).

2 Attach one end of the pylon fitting on the fan-cowl door hinge-fitting (28) using the bolt (29) equipped with bullet (27).
3 Remove the bullet (thread protector) (27) from the middle hinge bolt (29).
4 Install the washer (26) and the nut (25) on the bolt (29).
5 Apply MASTINOX D40 (Material No.CPNCL00338) on the fasteners.
6 TORQUE the nut (25) to between 2.24 and 1.79 m.daN (16.52 and 13.20 lbf.ft )

.
7 Safety the nut (25) with a new AIPC 71-13-80-01-120 PIN (24).
(5) Installation of the aft hinge bolt.
(a) Repeat Para. 4.C.(4)(a) for the aft hinge (30).
(6) Installation of the forward hinge bolt.
(a) If removed, put in position fan-cowl hinge rod F1 (22) (Ref. AMM TASK 71-13-46-400-802).
(b) Install the MAT - PROTECTIVE in the fan case zone under fan-cowl hinge rod F1 (22) in order to avoid damage during the task.
(c) Use the 98N7110H003-000 FAN COWL PROTECTION BULLETS KIT to screw the bullet (thread protector) (20) to the forward hinge bolt (23).

NOTE: In the 98N7110H003-000 FAN COWL PROTECTION BULLETS KIT, use item 202 for the forward hinge bolt (23).

1 Put fan-cowl hinge rod F1 (22) in position at the fan-cowl door hinge-fitting (21).
2 Attach one end of fan-cowl hinge rod F1 (22) to the fan-cowl door hinge-fitting (21) using bolt (23) equipped with the bullet (20).
3 Remove the bullet (thread protector) (20) from the forward hinge bolt (23).
(d) Install the washer (19) and the nut (18) on the bolt (23).
(e) Apply MASTINOX D40 (Material No.CPNCL00338) on the fasteners.
(f) TORQUE the nut (18) to between 1.79 and 1.38 m.daN (13.20 and 10.18 lbf.ft )

.
(g) Safety the nut (18) with a new AIPC 71-13-80-01-080 PIN (17).
(h) Remove the MAT - PROTECTIVE from the fan case zone.
(7) Only for the left fan cowl door:
(a) Install the bonding straps (14) and (15) with the screw (11), washer (12) and nut (13).
(b) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) and CPNCL00700ELECTRICAL BONDING COATING (BLUE COLOR) on the electrical bonding.
(c) Install the pylon harness with the screws (10) and (7), washers (8) and clamps (9).
(d) Remove the CAP - BLANKING from the connectors.
(e) Make sure that the connectors are clean and in the correct condition.
(f) Connect the pylon harness on the upper electrical connector (16).
(g) Make sure that the harness is correctly tightened.
(h) Put the flag in the serviceable position (Ref. AMM TASK 71-13-00-440-817).
(8) Remove the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE.

Subtask 71-13-11-420-066-A

D. Connection of the Forward Hold Open Rod (HOR) (permanently attached to the fan case)
(1) Gain access to the forward HOR (31).
(2) Remove the forward HOR (31) from the stowage bracket (38) on the fan cowl door.
(3) Put the forward HOR (31) in position on the fan case fitting (37).
(4) Install the forward HOR (31) with a new AIPC 71-13-10-10-720 COTTER PIN (36) or AIPC 71-13-11-10-130 COTTER PIN (36) (Ref. AMM TASK 71-13-12-400-803).

Subtask 71-13-11-410-072-A

E. Close the fan cowl door
(1) Close the fan cowl door (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.

Subtask 71-13-11-080-062-A

F. Removal of the Tooling
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(2) Remove the pad universal attach (5) from the hoist points of the fan cowl door.
(3) Remove the sling fan cowl (3) from the fan cowl door.

Subtask 71-13-11-420-067-A

G. Installation of the Filler Plugs
(1) Install the filler plugs (1) in the upper hoist points.
(2) TORQUE the filler plugs (1) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

.
(3) Install the filler plugs (1) in the lower hoist points.
(4) TORQUE the filler plugs (1) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

.
(5) Brush seal the fasteners with MASTINOX D40 (Material No.CPNCL00338) .
(6) Remove unwanted sealant with GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) .

Subtask 71-13-11-420-068-A

H. Installation of the Fan Cowl Strake

PRE SPOL BD-FC-17022

(1) Install the fan cowl strake (Ref. AMM TASK 71-13-15-400-802).

END OF PRE SPOL BD-FC-17022

Subtask 71-13-11-869-066-A

I. Check of the Electrical Bonding
(1) Make sure that the resistance value (ohmic) between each hinge or each latch of the fan cowl door and the pylon main metallic structure does not exceed 100 milliohms (Ref. AMM TASK 20-28-00-912-802).

Subtask 71-13-11-820-052-A

J. Check and Adjustment of the Fan Cowl Door

CAUTION: MAKE SURE THAT YOU ADJUST THE FAN COWL DOORS CORRECTLY. IF YOU DO NOT OBEY THIS PRECAUTION, YOU CAN CAUSE DAMAGE TO THE FAN COWL DOORS.

(1) Adjustment of the fan cowl door clearance (Ref. AMM TASK 71-13-11-820-802).
(2) Adjustment of the fan cowl door latches (Ref. AMM TASK 71-13-13-820-801).
(3) Do the operational test of the fan-cowl loss-prevention system (Ref. AMM TASK 71-13-13-720-803).

5. Close-up
Subtask 71-13-11-865-055-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
121VU	ENGINE/LATCH DOORS & SLATS/ENG1	93KS1	P39
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
121VU	ENGINE/LATCH DOORS & SLATS/ENG2	93KS2	P40

Subtask 71-13-11-410-073-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:49:28 UTC