Installation of the Pylon Anti-ice Duct

TASK 30-21-49-400-042-A
Installation of the Pylon Anti-ice Duct

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

1. Reason for the Job
Self 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)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-002)	cleaning fluid
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
11	SEAL	EIPC 36-11-06-02-060

E. Referenced Information

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 71-00-20-000-040-A	Removal of the Power Plant
TASK 71-00-20-000-040-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-00-20-400-040-A	Installation of the Power Plant
TASK 71-00-20-400-040-A-01	Installation of the Power Plant with the Engine Positioner TWW 75E (MIAG)
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 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
Pylon Anti-ice Duct
Starter Elbow-Duct

3. Job Set-up
Subtask 30-21-49-941-102-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(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:
(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 5 minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) to tell persons not to operate:

the ENG/MODE selector switch
the ENG/MASTER 1(2) control switch
is in position.

(3) On the ENG section of the maintenance panel 50VU:
(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) to tell persons not to energize the FADEC 1(2), is in position.

Subtask 30-21-49-865-103-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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 30-21-49-010-143-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 30-21-49-040-087-A ** ON A/C NOT FOR ALL

D. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012).

Subtask 30-21-49-010-144-A ** ON A/C NOT FOR ALL

E. Get Access
(1) Make sure that the thrust reverser cowl-doors are open (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL, 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL, 462AR.

Subtask 30-21-49-860-061-A ** ON A/C NOT FOR ALL

F. Make sure that the power plant is lowered (Ref. AMM TASK 71-00-20-000-040).

4. Procedure
Subtask 30-21-49-110-064-A ** ON A/C NOT FOR ALL

A. Clean the Ends of the Ducts
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with cleaning fluid (Material No.V01-002) to clean the ends of the ducts.

Subtask 30-21-49-420-063-C ** ON A/C NOT FOR ALL

B. Installation of the Pylon Anti-Ice Duct

Pylon Anti-ice Duct ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT THE SEGMENTS ARE CORRECTLY INSTALLED IN THE HOUSING.

(1) Install the pylon anti-ice duct (1).
(2) Install the stop plate (4) with the four screws (5) on the support.
(3) Make sure that the segments (3) are correctly installed in the housing (2).

Subtask 30-21-49-420-098-A ** ON A/C NOT FOR ALL

C. Installation of the Starter Elbow-Duct

Starter Elbow-Duct ** ON A/C NOT FOR ALL

(1) Put the skin/junction panel (13) in position.
(2) Put the sliding bracket (8) in position on the pylon.
(3) Install the new EIPC 36-11-06-02-060 SEAL (11) on the duct (10).
(4) Put the duct (10) through the installed sliding bracket (8) in position on the pylon support.
(5) Install the clamps.

CAUTION: MAKE SURE THAT THE SCREW OF THE ATTACHMENT CLAMP IS IN THE CORRECT POSITION. IF IT IS NOT, THE SCREW CAN CAUSE DAMAGE TO THE FIREWALL OF THE THRUST REVERSER COWL.

(a) Install the clamps (9) and (12) on the duct (10) to engage the duct, but do not fully tighten the clamps.
(6) Install the sliding bracket (8).
(a) Install the four bolts (14) and the four washers (15) on the pylon support and the sliding bracket (8).
1 Tighten the bolts (14).
(b) Install the bolt (17).
1 Tighten the bolt (17).
(7) Install the skin/junction panel (13) on the support and pylon support.
(a) Install the four bolts (16).
1 Tighten the bolts (16).
(b) Install two bolts (14) and two washers (15) on the upper holes of the skin/junction panel (13).
1 Tighten the bolts (14).
(c) Install the two other bolts (14) and the two washers (15) on the support.
1 Tighten the bolts (14).
(8) Tighten the clamps (9) and (12).

5. Close-up
Subtask 30-21-49-410-081-A ** ON A/C NOT FOR ALL

A. Lift the power plant (Ref. AMM TASK 71-00-20-400-040).

Subtask 30-21-49-865-104-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

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 30-21-49-410-117-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 30-21-49-440-071-A ** ON A/C NOT FOR ALL

D. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 30-21-49-410-118-A ** ON A/C NOT FOR ALL

E. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(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 30-21-49-862-068-A ** ON A/C NOT FOR ALL

F. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001)

[Rev.10 from 2021] 2026.04.01 00:29:41 UTC