W DOC AIRBUS | AMM A320F

Installation of the Air Intake Cowl [IAE]

TASK 71-11-11-400-010-B
Installation of the Air Intake Cowl

WARNING: BE CAREFUL DURING THE REMOVAL/INSTALLATION OF THE AIR INTAKE COWL. IT WEIGHS 248lb (112kg). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.
ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
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 2M (6 FT) - ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 55 and 45 lbf.in (0.62 and 0.51 m.daN ) T
No specific
Torque wrench: range to between 145 and 135 lbf.in (1.64 and 1.53 m.daN ) T
No specific
Torque wrench: range to between 231 and 189 lbf.in (2.61 and 2.14 m.daN ) T
IAE1N20401
1
DOLLY-INLET COWL
IAE1N20403
1
SLING-INLET COWL
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.V01-002)
cleaning fluid
(Material No.V04-018)
corrosion inhibitive jointing compound
(Material No.V08-026)
locking compound
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
431AL, 437AL, 438AR
FOR [1000EM2] (ENGINE-2)
441AR, 447AL, 448AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
3
SEAL
AIPC 71-11-11-80-040
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 30-21-00-710-001-A
Operational Check of the Engine-Anti-Ice System Fault-Warning
TASK 30-21-49-400-806-A
Installation of the Anti-Ice Duct Insulation
TASK 30-21-49-790-010-A
Leak Test of the Inlet Cowl Anti-Ice Supply Ducts with the Engine in Operation
TASK 70-23-11-911-013-A
General Torque Tightening Techniques
TASK 70-23-13-911-010-A
Procedures for the Installation of Preformed Packings
TASK 70-23-15-912-010-A
Connection of Electrical Connectors
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 73-22-11-400-010-A
Installation of the P2/T2 Sensor
TASK 73-22-11-710-040-A
Operational Test of the P2/T2 Probe Heater
F Air Intake Cowl
F Air Intake Cowl
3. Job Set-up
Subtask 71-11-11-860-051-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).
   (3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at zone:
     (a) FOR [1000EM1] (ENGINE-1)
431AL
     (b) FOR [1000EM2] (ENGINE-2)
441AR
Subtask 71-11-11-010-059-A ** ON A/C NOT FOR ALL
B. 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
Subtask 71-11-11-080-054-A ** ON A/C NOT FOR ALL
C. Remove the fan case cover (IAE 1J12183).
Subtask 71-11-11-480-055-A ** ON A/C NOT FOR ALL
D. Attach the Sling
F Air Intake Cowl ** ON A/C NOT FOR ALL
   (1) Remove the plugs (4), if installed, from the air intake cowl sling points.
   (2) Attach the IAE1N20403 SLING-INLET COWL to the hoist and to the air intake cowl.
Subtask 71-11-11-630-051-A ** ON A/C NOT FOR ALL
E. Remove the covers, caps and plugs from the openings, the electrical connectors and the electrical plugs.
Subtask 71-11-11-110-059-A ** ON A/C NOT FOR ALL
F. Cleaning
   (1) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) , made moist with cleaning fluid (Material No.V01-002) to clean these parts:
     (a) The ends of the ducts.
     (b) The hose connections.
     (c) The hose.
     (d) The engine fan case flange.
     (e) The rear flange of the air intake cowl.
     (f) The bolts.
4. Procedure
Subtask 71-11-11-420-051-A ** ON A/C NOT FOR ALL
A. Install the Air Intake Cowl
F Air Intake Cowl ** ON A/C NOT FOR ALL
CAUTION: MAKE SURE THAT THE PYLON FORWARD FAIRING IS CORRECTLY SEATED ON THE TRAILING EDGE LAND OF THE AIR INTAKE COWL. IF THE PYLON FORWARD FAIRING IS NOT IN THE CORRECT POSITION, DAMAGE CAN OCCUR.
   (1) Release the air intake cowl from the IAE1N20401 DOLLY-INLET COWL.
   (2) Align the four location spigots with the holes in the fan case flange.
   (3) Make sure that the pylon forward fairing panel is correctly seated on the trailing edge land of the air intake cowl.
   (4) Apply a thin layer of the corrosion inhibitive jointing compound (Material No.V04-018) on the threads and shanks of the bolts (1).
   (5) Use the bolts (1) to attach the intake cowl to the fan case flange.
     (a) Start at the 3 o'clock and the 9 o'clock positions and move in a sequence around the flange.
   (6) Make sure that there is a minimum of 0.040 in. (1.02 mm) and a maximum of 0.130 in. (3.30 mm) clearance between the air intake cowl trailing edge and the pylon forward fairing.
   (7) TORQUE the bolts (1) to between 231 and 189 lbf.in (2.61 and 2.14 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (8) Disengage the two forward hold open rods from the stowing brackets and engage them in the attach point brackets (Ref. AMM TASK 71-13-00-010-010).
Subtask 71-11-11-080-055-A ** ON A/C NOT FOR ALL
B. Remove the Sling
F Air Intake Cowl ** ON A/C NOT FOR ALL
   (1) Remove the sling (IAE 1N20403) from the air intake cowl and the hoist.
   (2) SBN71-0277: Apply locking compound (Material No.V08-026) to the threads of the plugs (4).
   (3) Install the plugs (4) into the air intake cowl sling points.
   (4) SBN71-0277: Remove the locking compound from the area around the blanking plugs.
Subtask 71-11-11-080-056-A ** ON A/C NOT FOR ALL
C. Remove the sling from the left and right fan cowl-doors.
F Air Intake Cowl ** ON A/C NOT FOR ALL
   (1) Lower the left and right fan cowl-doors and remove the IAE1N20404 SLING-FAN COWL DOORS or the 745-4001-1GSE FAN COWL SLING.
   (2) Install the blank caps (5) on the left and right fan-cowl-door sling-points.
Subtask 71-11-11-420-053-A ** ON A/C NOT FOR ALL
D. Installation of the Hardware
CAUTION: DO NOT TWIST THE HOSE WHEN YOU INSTALL AND TORQUE THE TUBE/HOSE. DAMAGE TO THE TUBE/HOSE CAN OCCUR AND GIVE FALSE INDICATIONS FROM THE P2T2 PROBE.
   (1) Connect the anti-ice duct
F Air Intake Cowl ** ON A/C NOT FOR ALL
     (a) Install a new AIPC 71-11-11-80-040 SEAL (3) (Ref. AMM TASK 70-23-13-911-010).
     (b) Connect the ducts.
     (c) Install the coupling (2).
     (d) TORQUE the coupling nuts to between 55 and 45 lbf.in (0.62 and 0.51 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (2) Connect the instrument air tube
F Air Intake Cowl ** ON A/C NOT FOR ALL
     (a) Connect the instrument air tube to the union at the cowl aft bulkhead.
     (b) TORQUE the tube connector nut to between 145 and 135 lbf.in (1.64 and 1.53 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (3) Connect the five electrical connectors (Ref. AMM TASK 70-23-15-912-010)
F Air Intake Cowl ** ON A/C NOT FOR ALL
     (a) Connect the three P2/T2 electrical connectors 4010VC-A, 4012VC-A and 4013VC-A.
     (b) Connect the TAI valve electrical connector 4000DN-A.
     (c) Connect the interphone jack electrical connector 4011VC-A.
   (4) Install the P2/T2 sensor.
NOTE: If the air intake cowl was removed to be overhauled, the P2/T2 installation task requires to be completed, (Ref. AMM TASK 73-22-11-400-010).
Subtask 71-11-11-790-051-A ** ON A/C NOT FOR ALL
E. Do a leak test on the coupling (2) (Ref. AMM TASK 30-21-49-790-010).
Subtask 71-11-11-420-056-A ** ON A/C NOT FOR ALL
F. Install the insulations around the coupling (2) (Ref. AMM TASK 30-21-49-400-806).
5. Close-up
Subtask 71-11-11-942-054-A ** ON A/C NOT FOR ALL
A. Remove the Support Equipment
   (1) Remove the air intake cowl transit-case/work-stand (IAE 1N20401).
Subtask 71-11-11-410-057-A ** ON A/C NOT FOR ALL
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-010):
     (a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
     (b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
   (4) Remove the WARNING NOTICE(S).
Subtask 71-11-11-710-051-A ** ON A/C NOT FOR ALL
C. Tests
   (1) Do this test:
ACTION
RESULT
1.On the MAINTENANCE panel 50VU, release the FADEC GND PWR ENG ENG1(2) pushbutton switch.
  • On the pushbutton switch, the ON legend comes on.
  • On the upper ECAM DU, the engine parameters EPR, EGT and Fuel Flow come into view.
2.On the upper display unit of the ECAM system, make sure that the EPR indication is not crossed (EPR=1)

3.On the MAINTENANCE panel 50VU, push the FADEC GND PWR ENG ENG1(2) pushbutton switch.
  • On the pushbutton switch, the ON legend goes off.
  • On the upper ECAM DU, the engine parameters EPR, EGT and Fuel Flow go out of view.
   (2) Do the operational test of the P2/T2 probe heater (Ref. AMM TASK 73-22-11-710-040).
   (3) Do an operational test of the anti ice system fault warning (Ref. AMM TASK 30-21-00-710-001).
[Rev.10 from 2021] 2026.04.01 08:19:54 UTC
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