DOC AIRBUS | AMM A320FInstallation of the Drain Mast [CFMI]
TASK 71-71-42-400-040-A
Installation of the Drain Mast
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 71-71-42-860-051-A ** ON A/C NOT FOR ALL
Subtask 71-71-42-420-055-A ** ON A/C NOT FOR ALL
Subtask 71-71-42-410-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:55:08 UTC
Installation of the Drain Mast
1. Reason for the Job
Self 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 15 and 12 lbf.in (0.17 and 0.14 m.daN )  |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-A | Closing of the Fan Cowl Doors |
Drain MastSubtask 71-71-42-860-051-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).
Subtask 71-71-42-010-055-A ** ON A/C NOT FOR ALL (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).
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 71-71-42-420-055-A ** ON A/C NOT FOR ALL
A. Installation of the Drain Mast
(1) Install the drain mast (10) to the drain manifold module with the screws (5). TORQUE the screws to between 15 and 12 lbf.in (0.17 and 0.14 m.daN ).
5. Close-up(1) Install the drain mast (10) to the drain manifold module with the screws (5). TORQUE the screws to between 15 and 12 lbf.in (0.17 and 0.14 m.daN )
. Subtask 71-71-42-410-052-A ** ON A/C NOT FOR ALL