Adjustment of the Fan Cowl Spigots and Bumpers [IAE]

TASK 71-13-00-800-011-A
Adjustment of the Fan Cowl Spigots and Bumpers

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

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

WARNING: DO NOT OPEN THE FAN COWL(S) WHEN THE WIND SPEED IS 60 MPH (96 KM/H) OR MORE. INJURY AND/OR DAMAGE TO THE ENGINE CAN OCCUR IF THE WIND MOVES THE FAN COWL(S).

1. Reason for the Job
This procedure supplies the data to adjust the fan cowl spigots.

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	SPRING BALANCE 30 DAN (72 LBF)
No specific	AR	WARNING NOTICE(S)
No specific	AR	WRENCH 3 MM - HEXAGON
No specific	Torque wrench: range to between 231 and 189 lbf.in (2.61 and 2.14 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-531)	Cleaning fluid
(Material No.V02-099)	lint free cloth

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
3	WASHERS	AIPC 71-13-11-81-130

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)
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 78-32-48-220-801-A	Check for Actuator Stow Tube Clearance
Spigot and Bumper Adjustment
In-to and Out-of Wind Step Limits

3. Job Set-up
Subtask 71-13-00-941-055-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 71-13-00-010-054-A ** ON A/C NOT FOR ALL

B. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 71-13-00-010-094-A ** ON A/C NOT FOR ALL

C. Remove the nuts (1), spigots (2), bumpers (10), the deflection plate (16), washers (3) and adjustment washers (6), (7), (8) and (9) from the keeper housings.

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-110-053-A ** ON A/C NOT FOR ALL

D. Clean the spigots and the bumpers
(1) Make a lint free cloth (Material No.V02-099) moist with Cleaning fluid (Material No.V01-531) . Use the cloth to clean the nuts (1), washers (3), adjustment washers (6), (7), (8), (9), spigots (2), bumpers (10), deflection plate (16) and the keeper housings (4).

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-210-069-A ** ON A/C NOT FOR ALL

E. Make sure that the nuts (1), washers (3), adjustment washers (6), (7), (8), (9), spigots (2), bumpers (10), deflection plate (16) and keeper housings (4) have no damage.

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-410-088-A ** ON A/C NOT FOR ALL

F. Install the spigots (2), bumpers (10) and deflection plate (16) in the correct positions for installation, as shown, to the keeper housings (4) of the latches with the washers (3) and nuts (1).

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-210-070-A ** ON A/C NOT FOR ALL

G. Make sure that no shim or adjustment washer (6), (7), (8) or (9) have been fitted between the spigots (2), bumpers (10) and keeper housings (4).

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-820-083-A ** ON A/C NOT FOR ALL

H. Use a WRENCH 3 MM - HEXAGON (12) to move each latch-keeper adjuster (11), and thus move each keeper eyebolt to the fully extended position.

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-210-071-A ** ON A/C NOT FOR ALL

I. Make sure that the door locators are correctly positioned to engage the latches.

Subtask 71-13-00-410-089-A ** ON A/C NOT FOR ALL

J. Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 71-13-00-820-084-A ** ON A/C NOT FOR ALL

A. Do the Steps that Follow and Set the Latches

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

NOTE: The tension on each latch is measured with the other three latches in the closed position.

(1) Use the adjusting tool (12) and the keeper adjusters (11) to apply a tension pre-load to the keeper eyebolts (14) and the latch hooks (13).
(2) Open one of the latches.
(3) Use the SPRING BALANCE 30 DAN (72 LBF), on the end of the latch handle (15), and measure the force necessary to close the latch. The force must be between 15 lbf (6.67 daN) and 20 lbf (8.90 daN).
(4) If necessary, move the keeper adjusters (11) and do this procedure again until you get the correct force to close the latch.
(5) Do this procedure again for the remaining three latches.

Subtask 71-13-00-210-072-A ** ON A/C NOT FOR ALL

B. Make sure that the gap between the door edges is between 0.100 in. (2.54 mm) and 0.350 in. (8.89 mm).

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-820-085-A ** ON A/C NOT FOR ALL

C. Calculate the Thickness of the Adjustment Washers

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

(1) Measure and write Dimension X - Step 1 of View F-F and H-H (the dimension between the latch housings (5) and the flange of the spigots (2) on the latches).
(2) Measure and write Dimension X - Step 1 of View G-G and J-J (the dimension between the latch housings (5) and the face of the bumpers (10) on the latches).
(3) Assemble the adjustment washers (6), (7) or (8) in any mix necessary to get the thickness of Dimension X between +0.002 in. (0.05 mm) and -0 in. (0.00 mm) for each of the spigots (2) on the latches.
(4) Assemble the adjustment washers (9) to the thickness of Dimension X between +0.002 in. (0.05 mm) and -0 in. (0.00 mm) for each of the bumpers (10) on the latches.

Subtask 71-13-00-010-095-A ** ON A/C NOT FOR ALL

D. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 71-13-00-020-060-A ** ON A/C NOT FOR ALL

E. Remove the Spigots and the Bumpers

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

(1) Remove the nuts (1) and washers (3) from the spigots (2) and bumpers (10).
(2) Remove the spigots (2), bumpers (10) and deflection plate (16) from the keeper housings (4).

Subtask 71-13-00-420-060-A ** ON A/C NOT FOR ALL

F. Install the Spigots, Bumpers, Deflector Bracket and Adjustment Washers

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

(1) Install the assembled mix of adjustment washers (6), (7) or (8) on each of the spigots (2).
(2) Attach the spigots (2), the mix of adjustment washers (6), (7) or (8) and the deflection plate (16) in the correct positions for installation, as shown to the No.1 keeper housings (4) with the nuts (1) and AIPC 71-13-11-81-130 WASHERS (3) - Step 2 View F-F.
(3) Attach the spigots (2), the mix of adjustment washers (6), (7) or (8) to the No 2, 3 and 4 keeper housings (4) with the nuts (1) and AIPC 71-13-11-81-130 WASHERS (3) - Step 2 View H-H.
(4) Install the assembled adjustment washers (9) on each of the bumpers (10).
(5) Attach the bumpers (10), the adjustment washers (9) and deflection plate (16) to the keeper housings (4) with the nuts (1) and washers (3) - Step 2 View F-F and H-H.

NOTE: Install the unused washers (6), (7), (8) and (9) on the spigot and bumpers before the washer (3) and nut (1) are installed. The washers may be required if doors are adjusted at a later date.

(6) Tighten the nuts (1) with your hand.

Subtask 71-13-00-410-090-A ** ON A/C NOT FOR ALL

G. Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 71-13-00-220-061-A ** ON A/C NOT FOR ALL

H. Do a Check of the In-to or Out-of Wind Step of the Latch Handles

In-to and Out-of Wind Step Limits ** ON A/C NOT FOR ALL

(1) Measure the distance between the outer edge of the latch handle and the cowl door. (Dimension W).
(a) If the latch handle is more than 0.040 in. (1.02 mm) out from the surface of the cowl door, adjust the latch (Ref. AMM TASK 71-13-00-800-012).
(b) If the latch handle is more than 0.050 in. (1.27 mm) in from the surface of the cowl door, adjust the latch (Ref. AMM TASK 71-13-00-800-012).
(c) If the position of the latch handle is between the limits given in this procedure, no adjustment is necessary.

Subtask 71-13-00-820-086-A ** ON A/C NOT FOR ALL

I. Adjustment of the Force Necessary to Close the Latches

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

NOTE: The tension on each latch is measured with the other three latches in the closed position.

NOTE: Use the adjusting tool (12) and the keeper adjusters (11) to apply an increased tension pre-load to the keeper eyebolts (14) and the latch hooks (13).

(1) Open one of the latches.
(2) Use the spring balance, on the end of the latch handle (15), and measure the force necessary to close the latch. The force must be between 30.0 lbf (13.34 daN) and 40.0 lbf (17.79 daN).
(3) If necessary, move the keeper adjusters (11) and do this procedure again until you get the correct force to close the latch.
(4) Do this procedure again for adjustment of the remaining three latches.

Subtask 71-13-00-210-073-A ** ON A/C NOT FOR ALL

J. Do a Check of the Spigots and Bumpers at the Latches

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

(1) Make sure that the flanges of the spigots (2) and the face of the bumpers (10) touch the latch housings (6) - Step 2 of View F-F, G-G, H-H and J-J.
(2) If the flanges of the spigots (2) or the face of bumpers (10) do not touch the latch housings (6), do the adjustment procedure again.

Subtask 71-13-00-010-096-A ** ON A/C NOT FOR ALL

K. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 71-13-00-420-061-A ** ON A/C NOT FOR ALL

L. TORQUE the nuts (1) to between 231 and 189 lbf.in (2.61 and 2.14 m.daN )

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

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

Subtask 71-13-00-410-091-A ** ON A/C NOT FOR ALL

M. Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 71-13-00-820-061-A ** ON A/C NOT FOR ALL

N. Make a Check of the Force Necessary to Close Each of the Four Latches

Spigot and Bumper Adjustment ** ON A/C NOT FOR ALL

(1) Do a functional check of the latch tension and make sure each latch is within limits (Ref. AMM TASK 71-13-00-800-010).
(2) The force necessary to close each of the latches must be in the limits given. If it is not, do the adjustment procedure again.

Subtask 71-13-00-220-059-A ** ON A/C NOT FOR ALL

O. Do a check of the clearance between the actuator stow tube and the fan cowl door (Ref. AMM TASK 78-32-48-220-801).

5. Close-up
Subtask 71-13-00-410-058-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) Make sure that the fan cowls are closed correctly (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).

[Rev.10 from 2021] 2026.04.01 02:29:13 UTC