Installation of the Ventilation Grid (right and left) [CFML]
TASK 71-13-47-400-802-A
Installation of the Ventilation Grid (right and left)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 71-13-47-941-053-A
Subtask 71-13-47-420-051-A
Subtask 71-13-47-410-051-A
[Rev.10 from 2021]
2026.04.02 06:33:23 UTC
Installation of the Ventilation Grid (right and left)
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:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ) ![]() |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CPNCL00245) | RELEASE AGENT QZ 5111 |
| (Material No.CPNCL00338) | MASTINOX D40 |
| (Material No.CPNCL00700) | ELECTRICAL BONDING COATING (BLUE COLOR) |
| (Material No.CPNCL01237) | Polysulfide Sealant - General Purpose Interfay |
| (Material No.CPNCL01420) | SEALANT LOW DENSITY-FUEL TANK & GP |
| (Material No.CPNCL02069) | LINT-FREE COTTON CLOTH |
| (Material No.CPNCL02589) | GENERAL CLEANING AGENT - MULTI PURPOSE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| 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 |
Subtask 71-13-47-941-053-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).
Subtask 71-13-47-010-053-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, and
- 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).
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
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
Subtask 71-13-47-420-051-A
A. Installation of the Ventilation Grid, Left Side
(1) Clean the ventilation grid (4) and the mating surfaces of the fan cowl door. Use GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) .
(2) Apply a thin layer of SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) on the mating surfaces of the ventilation grid (4).
(3) Carefully put the ventilation grid (4) in position on the fan cowl door.
(4) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(5) Remove the unwanted sealant.
(6) Remove the ventilation grid (4).
(7) Apply RELEASE AGENT QZ 5111 (Material No.CPNCL00245) on the ventilation grid (4) contact surface zone.
(8) Carefully put the ventilation grid (4) in position on the fan cowl door.
(9) Remove the unwanted sealant.
(10) Install the ventilation grid (4) with bolts (6) and washers (5).
(a) Wet-install the fasteners with Polysulfide Sealant - General Purpose Interfay (Material No.CPNCL01237) .
(11) TORQUE the bolts (6) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.
(12) Apply MASTINOX D40 (Material No.CPNCL00338) on the fasteners.
PRE SPOL BD-FC-17008
(13) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) andCPNCL00700 ELECTRICAL BONDING COATING (BLUE COLOR) on the electrical bonding (three contact points) (Ref. AMM TASK 20-28-00-912-802).
END OF PRE SPOL BD-FC-17008
POST SPOL BD-FC-17008
(14) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) andCPNCL00700 ELECTRICAL BONDING COATING (BLUE COLOR) on electrical bonding (three contact points) (Ref. AMM TASK 20-28-00-912-802).
END OF POST SPOL BD-FC-17008
Subtask 71-13-47-420-052-A (1) Clean the ventilation grid (4) and the mating surfaces of the fan cowl door. Use GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) .
(2) Apply a thin layer of SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) on the mating surfaces of the ventilation grid (4).
(3) Carefully put the ventilation grid (4) in position on the fan cowl door.
(4) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(5) Remove the unwanted sealant.
(6) Remove the ventilation grid (4).
(7) Apply RELEASE AGENT QZ 5111 (Material No.CPNCL00245) on the ventilation grid (4) contact surface zone.
(8) Carefully put the ventilation grid (4) in position on the fan cowl door.
(9) Remove the unwanted sealant.
(10) Install the ventilation grid (4) with bolts (6) and washers (5).
(a) Wet-install the fasteners with Polysulfide Sealant - General Purpose Interfay (Material No.CPNCL01237) .
(11) TORQUE the bolts (6) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
. (12) Apply MASTINOX D40 (Material No.CPNCL00338) on the fasteners.
PRE SPOL BD-FC-17008
(13) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) and
END OF PRE SPOL BD-FC-17008
POST SPOL BD-FC-17008
(14) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) and
END OF POST SPOL BD-FC-17008
B. Installation of the Ventilation Grid, Right Side
(1) Clean the ventilation grid (1) and mating surfaces of the fan cowl door. Use GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) .
(2) Apply a thin layer of SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) on the mating surfaces of the ventilation grid (1).
(3) Carefully put the ventilation grid (1) in position on the fan cowl door.
(4) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(5) Remove the unwanted sealant.
(6) Remove the ventilation grid (1).
(7) Apply RELEASE AGENT QZ 5111 (Material No.CPNCL00245) on the ventilation grid (1) contact surface zone.
(8) Carefully put the ventilation grid (1) in position on the fan cowl door.
(9) Remove the unwanted sealant.
(10) Install the ventilation grid (1) with the bolts (3) and washers (2).
(a) Wet-install the fasteners with Polysulfide Sealant - General Purpose Interfay (Material No.CPNCL01237) .
(11) TORQUE the bolts (3) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.
(12) Apply MASTINOX D40 (Material No.CPNCL00338) on the fasteners.
PRE SPOL BD-FC-17009
(13) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) andCPNCL00700 ELECTRICAL BONDING COATING (BLUE COLOR) on electrical bonding (three contact points) (Ref. AMM TASK 20-28-00-912-802).
END OF PRE SPOL BD-FC-17009
POST SPOL BD-FC-17009
(14) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) andCPNCL00700 ELECTRICAL BONDING COATING (BLUE COLOR) on electrical bonding (three contact points) (Ref. AMM TASK 20-28-00-912-802).
END OF POST SPOL BD-FC-17009
5. Close-up(1) Clean the ventilation grid (1) and mating surfaces of the fan cowl door. Use GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) .
(2) Apply a thin layer of SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) on the mating surfaces of the ventilation grid (1).
(3) Carefully put the ventilation grid (1) in position on the fan cowl door.
(4) Let the sealant cure. Refer to the manufacturer's instructions for the cure time.
(5) Remove the unwanted sealant.
(6) Remove the ventilation grid (1).
(7) Apply RELEASE AGENT QZ 5111 (Material No.CPNCL00245) on the ventilation grid (1) contact surface zone.
(8) Carefully put the ventilation grid (1) in position on the fan cowl door.
(9) Remove the unwanted sealant.
(10) Install the ventilation grid (1) with the bolts (3) and washers (2).
(a) Wet-install the fasteners with Polysulfide Sealant - General Purpose Interfay (Material No.CPNCL01237) .
(11) TORQUE the bolts (3) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
. (12) Apply MASTINOX D40 (Material No.CPNCL00338) on the fasteners.
PRE SPOL BD-FC-17009
(13) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) and
END OF PRE SPOL BD-FC-17009
POST SPOL BD-FC-17009
(14) Apply SEALANT LOW DENSITY-FUEL TANK & GP (Material No.CPNCL01420) and
END OF POST SPOL BD-FC-17009
Subtask 71-13-47-410-051-A
A. Close Access
Make sure that the work area is clean and clear of tools and other items.
(1) 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
(2) Remove the WARNING NOTICE(S).
Make sure that the work area is clean and clear of tools and other items.
(1) 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
(2) Remove the WARNING NOTICE(S).
Ventilation Grid (right and left)