DOC AIRBUS | AMM A320FInstallation of the Starter Flapper Door [CFML]
TASK 71-13-48-400-802-A
Installation of the Starter Flapper Door
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 71-13-48-941-053-A
Subtask 71-13-48-420-051-A
Subtask 71-13-48-410-051-A
[Rev.10 from 2021]
2026.04.02 06:33:23 UTC
Installation of the Starter Flapper Door
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:
BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY AND/OR DAMAGE CAN OCCUR.
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.
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 0.25 and 0.22 m.daN (22.12 and 19.47 lbf.in )  | |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| 98D27803500002 | 1 | LOCKING TOOL ZERO POS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CPNCL00245) | Release agent QZ 5111 |
| (Material No.CPNCL00700) | Direct adhesion topcoat 4125/6407 (Blue varnish) |
| (Material No.CPNCL01027) | Two part paste adhesive (Hysol EA 9394) |
| (Material No.CPNCL01237) | Polysulfide sealant - general purpose interfay |
| (Material No.CPNCL01420) | Sealant MC780B |
| (Material No.CPNCL02069) | Textile - lint free cotton |
| (Material No.CPNCL02159) | Epoxy carbon prepreg - plain weave 193 gsm 180 deg.C (356.00 deg.F) |
| (Material No.CPNCL02589) | Diestone DLS |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 3 | NUT | AIPC 71-13-80-03-020 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 27-80-00-866-005-A | Retracting the Slats on the Ground |
| TASK 71-13-00-010-803-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-803-A | Closing of the Fan Cowl Doors |
Starter Flapper DoorSubtask 71-13-48-941-053-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:
(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).
(3) Make sure that the slats are in the fully retracted position (Ref. AMM TASK 27-80-00-866-005).
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap and slat control lever on panel 114VU.
Subtask 71-13-48-010-053-A (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.
(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).
(3) Make sure that the slats are in the fully retracted position (Ref. AMM TASK 27-80-00-866-005).
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is on the flap and slat control lever on panel 114VU.
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 71-13-48-420-051-A
A. Installation of the Starter Flapper Door
(1) Clean the starter flapper door (2) and the mating surfaces of the fan cowl door. Use Diestone DLS (Material No.CPNCL02589) and Textile - lint free cotton (Material No.CPNCL02069) .
(2) Carefully put the starter flapper door (2) in position on the fan cowl door.
(3) Do a visual inspection of the liquid shim. Do Para. 4.A.(3)(a) thru Para. 4.A.(3)(j) only if the liquid shim is damaged:
(a) Remove the liquid or liquid/solid shim from the mating surface of the fan cowl door.
(b) Clean the starter flapper door (2) and the mating surface of the fan cowl door. Use non-aqueous Diestone DLS (Material No.CPNCL02589) and Textile - lint free cotton (Material No.CPNCL02069) .
(c) Install the starter flapper door (2) temporarily on the fan cowl door. Use the bolts (1) and the new AIPC 71-13-80-03-020 NUT (3).
(d) Measure and record the maximum distance between the starter flapper door (2) and fan cowl door.
(e) Remove the starter flapper door (2), the bolts (1) and the nuts (3) from the fan cowl door.
(f) Apply a liquid or liquid/solid shim:
1 If the maximum distance recorded in Para. 4.A.(3)(d) is 0.50 mm (0.02 in.) or less, apply a liquid shim ofCPNCL01027 Two part paste adhesive (Hysol EA 9394)
2 If the maximum distance recorded in Para. 4.A.(3)(d) is between 0.51 mm (0.02 in.) and 1.2 mm (0.05 in.), apply a liquid/solid shim ofCPNCL01027 Two part paste adhesive (Hysol EA 9394) CPNCL02159 Epoxy carbon prepreg - plain weave 193 gsm 180 deg.C (356.00 deg.F)
3 A clearance more than 1.2 mm (0.05 in.) is not permitted.
(g) Apply Release agent QZ 5111 (Material No.CPNCL00245) on the starter flapper door (2) contact surface zone.
(h) Install the starter flapper door (2) temporarily on the fan cowl door. Use the bolts (1) and the nuts (3).
(i) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(j) Remove the starter flapper door (2), bolts (1) and nuts (3) from the fan cowl door.
(4) Apply a thin layer of Sealant MC780B (Material No.CPNCL01420) on the mating surfaces of the starter flapper door (2).
(5) Carefully put the starter flapper door (2) in position on the fan cowl door.
(6) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(7) Remove the unwanted sealant.
(8) Fill/seal the groove between the fan cowl door and the starter flapper door (2) with Polysulfide sealant - general purpose interfay (Material No.CPNCL01237) .
(9) Install the starter flapper door (2) with bolts (1) and new AIPC 71-13-80-03-020 NUT (3).
(10) TORQUE the bolts (1) to between 0.25 and 0.22 m.daN (22.12 and 19.47 lbf.in ).
(11) Apply Sealant MC780B (Material No.CPNCL01420) andCPNCL00700 Direct adhesion topcoat 4125/6407 (Blue varnish)
5. Close-up(1) Clean the starter flapper door (2) and the mating surfaces of the fan cowl door. Use Diestone DLS (Material No.CPNCL02589) and Textile - lint free cotton (Material No.CPNCL02069) .
(2) Carefully put the starter flapper door (2) in position on the fan cowl door.
(3) Do a visual inspection of the liquid shim. Do Para. 4.A.(3)(a) thru Para. 4.A.(3)(j) only if the liquid shim is damaged:
(a) Remove the liquid or liquid/solid shim from the mating surface of the fan cowl door.
(b) Clean the starter flapper door (2) and the mating surface of the fan cowl door. Use non-aqueous Diestone DLS (Material No.CPNCL02589) and Textile - lint free cotton (Material No.CPNCL02069) .
(c) Install the starter flapper door (2) temporarily on the fan cowl door. Use the bolts (1) and the new AIPC 71-13-80-03-020 NUT (3).
(d) Measure and record the maximum distance between the starter flapper door (2) and fan cowl door.
(e) Remove the starter flapper door (2), the bolts (1) and the nuts (3) from the fan cowl door.
(f) Apply a liquid or liquid/solid shim:
1 If the maximum distance recorded in Para. 4.A.(3)(d) is 0.50 mm (0.02 in.) or less, apply a liquid shim of
2 If the maximum distance recorded in Para. 4.A.(3)(d) is between 0.51 mm (0.02 in.) and 1.2 mm (0.05 in.), apply a liquid/solid shim of
3 A clearance more than 1.2 mm (0.05 in.) is not permitted.
(g) Apply Release agent QZ 5111 (Material No.CPNCL00245) on the starter flapper door (2) contact surface zone.
(h) Install the starter flapper door (2) temporarily on the fan cowl door. Use the bolts (1) and the nuts (3).
(i) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(j) Remove the starter flapper door (2), bolts (1) and nuts (3) from the fan cowl door.
(4) Apply a thin layer of Sealant MC780B (Material No.CPNCL01420) on the mating surfaces of the starter flapper door (2).
(5) Carefully put the starter flapper door (2) in position on the fan cowl door.
(6) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(7) Remove the unwanted sealant.
(8) Fill/seal the groove between the fan cowl door and the starter flapper door (2) with Polysulfide sealant - general purpose interfay (Material No.CPNCL01237) .
(9) Install the starter flapper door (2) with bolts (1) and new AIPC 71-13-80-03-020 NUT (3).
(10) TORQUE the bolts (1) to between 0.25 and 0.22 m.daN (22.12 and 19.47 lbf.in )
. (11) Apply Sealant MC780B (Material No.CPNCL01420) and
Subtask 71-13-48-410-051-A
A. 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 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS from the flap and slat control lever on panel 114VU.
(5) Remove the WARNING NOTICE(S).
(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 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS from the flap and slat control lever on panel 114VU.
(5) Remove the WARNING NOTICE(S).