DOC AIRBUS | AMM A320FInstallation of the Main Anti-ice Ducts
TASK 30-21-49-400-041-A
Installation of the Main Anti-ice Ducts
1. Reason for the Job
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 30-21-49-860-063-A ** ON A/C NOT FOR ALL
Subtask 30-21-49-420-065-A ** ON A/C NOT FOR ALL
Subtask 30-21-49-410-083-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:29:22 UTC
Installation of the Main Anti-ice Ducts
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP8001) | lockwire 0.032 in. (0.8 mm) dia. |
| (Material No.CP8002) | lockwire 0.032 in. (0.8 mm) dia |
| (Material No.03LBB1) | Grease-Thread Anti-seize Graphited and Petrolatum - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 462AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 115 | SEAL | AIPC 30-21-49-01-060 |
| 75 | SEAL | AIPC 30-21-49-01-070 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 30-21-49-790-802-A | Leak Test of the Nacelle Anti-Ice Supply-Ducts and Hoses with the Engine in Operation |
| 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 |
| TASK 78-30-00-081-041-A | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-A | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-A | Opening of the Thrust Reverser Doors |
| TASK 78-36-00-410-040-A | Closing of the Thrust Reverser Doors |
Anti-ice DuctsSubtask 30-21-49-860-063-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) On the center pedestal, on the ENG panel 115VU, make sure that the WARNING NOTICE(S) is in position to tell persons not to start the engine.
(3) On the ENG section of the maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize the FADEC system 1(2).
(4) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position.
Subtask 30-21-49-010-096-A ** ON A/C NOT FOR ALL (1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) On the center pedestal, on the ENG panel 115VU, make sure that the WARNING NOTICE(S) is in position to tell persons not to start the engine.
(3) On the ENG section of the maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize the FADEC system 1(2).
(4) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position.
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the right thrust reverser door is open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR.
Subtask 30-21-49-040-068-A ** ON A/C NOT FOR ALL Subtask 30-21-49-865-068-A ** ON A/C NOT FOR ALL (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the right thrust reverser door is open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR.
D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | ANTI ICE/ENG/2 | 1DN2 | W10 |
| 122VU | ANTI ICE/ENG/1 | 1DN1 | X10 |
Subtask 30-21-49-420-065-A ** ON A/C NOT FOR ALL
A. Installation of the Anti-ice Ducts
(2) Lubricate the bolts (110) with Grease-Thread Anti-seize Graphited and Petrolatum - (Material No.03LBB1) .
(3) Attach the upper anti-ice duct (90) to the engine with the new AIPC 30-21-49-01-060 SEAL (115) and the bolts (110). Tighten the bolts sufficiently to hold the duct on the engine.
(4) Connect the rear anti-ice duct (85) to the upper anti-ice duct (90) with the new AIPC 30-21-49-01-070 SEAL (75) and the coupling (70). Tighten the coupling sufficiently to hold the ducts together.
(5) Attach the flange that is on the rear anti-ice duct (85) to the fireshield with the bolts (95), the washers (100) and the nuts (105). Tighten the bolts sufficiently to hold the duct to the fireshield.
(6) Use the new AIPC 30-21-49-01-070 SEAL (75) and the couplings (70) to connect the forward anti-ice duct (80) to:
(a) the rear anti-ice duct (85),
(b) the anti-ice valve 4000DN (5).
(7) Tighten the couplings sufficiently to hold the ducts and the valve together.
(8) Attach the support links to the bracket of the forward anti-ice duct (80) with the bolts (55), the washers (60), and the nuts (65). Tighten the bolts sufficiently to hold the support links to the bracket.
(9) TORQUE the bolts (110) that connect the upper anti-ice duct (90) to the engine port to between 170 and 124 lbf.in (1.92 and 1.40 m.daN )
. Safety the bolts with CP8001 lockwire 0.032 in. (0.8 mm) dia. CP8002 lockwire 0.032 in. (0.8 mm) dia
(10) TORQUE the bolts (95) that attach the flange of the rear anti-ice duct (85) to the fireshield to between 70 and 50 lbf.in (0.79 and 0.57 m.daN ).
(11) If the coupling (70) is of the type shown on
try to move the slide. If the slide moves, open the coupling. Close the coupling so that the saddle washer is in the recess of the other half of the coupling. If the slide does not move, replace the coupling (70).
(12) Torque the nut on the couplings (70) to the value shown on the face of the coupling. Tap hit the coupling perimeters with a hammer not made of metal. Torque the nuts on the couplings again to the same value and tap hit the coupling perimeters again. Do this procedure again, then torque the nuts to the same value.
(13) Torque the nut on the couplings (70) to the value shown on the face of the coupling. Tap hit the coupling perimeters with a hammer not made of metal. Torque the nuts on the couplings again to the same value and tap hit the coupling perimeters again. Do this procedure again, then torque the nuts to the same value.
(14) Adjust the support links as is necessary until the ducts and the links are not preloaded.
(15) TORQUE the support link bolts (55) to between 140 and 100 lbf.in (1.58 and 1.13 m.daN ). Safety the links with CP8001 lockwire 0.032 in. (0.8 mm) dia. CP8002 lockwire 0.032 in. (0.8 mm) dia
(16) Connect the tube (15) to the hose (35).
(17) Connect the hose (10) to the tube (15) and the valve (5).
(18) TORQUE the couplings to between 150 and 135 lbf.in (1.70 and 1.53 m.daN ).
Subtask 30-21-49-790-067-A ** ON A/C NOT FOR ALL CAUTION:
MAKE SURE THE LATCH AND HINGE OF THE COUPLING DO NOT TOUCH ADJACENT COMPONENTS OR COWL DOORS (WHEN CLOSED). DO NOT USE FORCE TO ENGAGE THE SADDLE WASHER IN THE RECESS OF THE OTHER COUPLING HALF. DAMAGE TO COMPONENTS CAN OCCUR.
CAUTION:
TWO TYPES OF COUPLINGS ARE USED ON THE BLEED AIR DUCTS. IT IS POSSIBLE TO INSTALL ONE OF THESE TYPES INCORRECTLY. WHEN YOU INSTALL THIS TYPE OF COUPLING, MAKE SURE THE SLIDE PART OF THE COUPLING (WITH THE SADDLE WASHER) ENGAGES THE RECESSES OF THE OTHER HALF OF THE COUPLING. IF THE COUPLING IS INSTALLED INCORRECTLY, IT CAN DISENGAGE AND CAUSE LARGE AIR LEAKS AND POSSIBLE DAMAGE.
(1) Remove the blanking plugs from the ducts. (2) Lubricate the bolts (110) with Grease-Thread Anti-seize Graphited and Petrolatum - (Material No.03LBB1) .
(3) Attach the upper anti-ice duct (90) to the engine with the new AIPC 30-21-49-01-060 SEAL (115) and the bolts (110). Tighten the bolts sufficiently to hold the duct on the engine.
(4) Connect the rear anti-ice duct (85) to the upper anti-ice duct (90) with the new AIPC 30-21-49-01-070 SEAL (75) and the coupling (70). Tighten the coupling sufficiently to hold the ducts together.
(5) Attach the flange that is on the rear anti-ice duct (85) to the fireshield with the bolts (95), the washers (100) and the nuts (105). Tighten the bolts sufficiently to hold the duct to the fireshield.
(6) Use the new AIPC 30-21-49-01-070 SEAL (75) and the couplings (70) to connect the forward anti-ice duct (80) to:
(a) the rear anti-ice duct (85),
(b) the anti-ice valve 4000DN (5).
(7) Tighten the couplings sufficiently to hold the ducts and the valve together.
(8) Attach the support links to the bracket of the forward anti-ice duct (80) with the bolts (55), the washers (60), and the nuts (65). Tighten the bolts sufficiently to hold the support links to the bracket.
(9) TORQUE the bolts (110) that connect the upper anti-ice duct (90) to the engine port to between 170 and 124 lbf.in (1.92 and 1.40 m.daN )
. Safety the bolts with (10) TORQUE the bolts (95) that attach the flange of the rear anti-ice duct (85) to the fireshield to between 70 and 50 lbf.in (0.79 and 0.57 m.daN )
. (11) If the coupling (70) is of the type shown on
try to move the slide. If the slide moves, open the coupling. Close the coupling so that the saddle washer is in the recess of the other half of the coupling. If the slide does not move, replace the coupling (70).
(12) Torque the nut on the couplings (70) to the value shown on the face of the coupling. Tap hit the coupling perimeters with a hammer not made of metal. Torque the nuts on the couplings again to the same value and tap hit the coupling perimeters again. Do this procedure again, then torque the nuts to the same value.
(13) Torque the nut on the couplings (70) to the value shown on the face of the coupling. Tap hit the coupling perimeters with a hammer not made of metal. Torque the nuts on the couplings again to the same value and tap hit the coupling perimeters again. Do this procedure again, then torque the nuts to the same value.
(14) Adjust the support links as is necessary until the ducts and the links are not preloaded.
(15) TORQUE the support link bolts (55) to between 140 and 100 lbf.in (1.58 and 1.13 m.daN )
. Safety the links with (16) Connect the tube (15) to the hose (35).
(17) Connect the hose (10) to the tube (15) and the valve (5).
(18) TORQUE the couplings to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )
. B. Leak Test
(1) Do the leak test of the main anti-ice ducts with the engine in operation (Ref. AMM TASK 30-21-49-790-802).
5. Close-up(1) Do the leak test of the main anti-ice ducts with the engine in operation (Ref. AMM TASK 30-21-49-790-802).
Subtask 30-21-49-410-083-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) Close the right thrust reverser door (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR
Subtask 30-21-49-440-060-A ** ON A/C NOT FOR ALL Subtask 30-21-49-410-086-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust reverser door (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR
C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
Subtask 30-21-49-865-070-A ** ON A/C NOT FOR ALL (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 30-21-49-862-060-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | ANTI ICE/ENG/2 | 1DN2 | W10 |
| 122VU | ANTI ICE/ENG/1 | 1DN1 | X10 |