W DOC AIRBUS | AMM A320F

Deactivation of the Maintenance Interphone Jack on the Engine from the Forward Cargo Compartment

TASK 23-44-00-040-802-A-01
Deactivation of the Maintenance Interphone Jack on the Engine from the Forward Cargo Compartment

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 130
ZONE: 210
ZONE: 430
ZONE: 440
ZONE: 450
ZONE: 460
FIN: 4000RJ1 ** ON A/C NOT FOR ALL
FIN: 4000RJ2 ** ON A/C NOT FOR ALL
1. Reason for the Job
This procedure is for the deactivation of the Maintenance Interphone Jack on the Engine.
NOTE: This deactivation task is not related to an AFM-CDL/MMEL item.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT)
No specific
1
MARKER - INDELIBLE
No specific
AR
PLUG - BLANKING, RED
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
TIE WRAP(S)
No specific
AR
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.05RAB9)
Adhesive Film Tape-- Aluminium Foil -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
130
FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
430
ENG 1 AIR INTAKE, FAN AND ACCESS GEARBOX
440
ENG 2 AIR INTAKE, FAN AND ACCESS GEARBOX
450
ENG 1 THRUST REVERSER & EXHAUST SECTION
460
ENG 2 THRUST REVERSER & EXHAUST SECTION
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 23-44-42-000-001-A
Removal of the Isolation Units
TASK 23-44-42-400-001-A
Installation of the Isolation Units
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 25-54-12-000-001-A
Removal of the Forward Cargo-Compartment Partition
TASK 25-54-12-000-002-A
Removal of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-400-001-A
Installation of the Forward Cargo-Compartment Partition
TASK 25-54-12-400-002-A
Installation of the Ceiling Panels in the Forward Cargo Compartment
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
ESPM 205455
TASK 06-41-53-00
FUSELAGE-DESCRIPTION AND OPERATION
3. Job Set-up
Subtask 23-44-00-860-064-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) In the cockpit, 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 for 5 minutes or more before you do this procedure.
     (c) Put a WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
   (3) In the cockpit, on the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
   (4) Get access to the isolation unit 4RJ3:
     (a) Open the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
     (b) Find the location of the isolation unit 4RJ3:
  • For A318: on FR29
  • For A319: on FR30
  • For A320: on FR33
  • For A321: on FR35.6.
     (c) Put an ACCESS PLATFORM 2M (6 FT) in position below the opened forward cargo-compartment door.
     (d) Remove the partition wall FR35.5 or ceiling panels of the forward cargo compartment (Ref. AMM D/O 06-41-53-00) (Ref. AMM TASK 25-54-12-000-002) (Ref. AMM TASK 25-54-12-000-001):
  • For A318 between FR28 and FR30
  • For A319 between FR29 and FR34
  • For A320 between FR32 and FR34
  • For A321 on FR35.5.
Subtask 23-44-00-865-067-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/1150RHG01
** ON A/C NOT FOR ALL
49VUAIR COND/CIDS/SDF/DIR2 ESS18WHC06
49VUAIR COND/CIDS/SDF/DIR1 ESS15WHC05
** ON A/C NOT FOR ALL
49VUCOM DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM NAV/CIDS/DIR2 ESS157RHG02
49VUCOM NAV/CIDS/DIR1 ESS150RHG01
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM06
121VUCOM NAV/CIDS/DIR NORM/1151RHM05
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM07
121VUCOM NAV/CIDS/DIR NORM/1151RHM06
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR2 NORM156RHM06
121VUCOM NAV/CIDS/DIR1 NORM151RHM05
** ON A/C NOT FOR ALL
122VUAIR COND/CIDS/SDF/DIR NORM/214WHT18
122VUAIR COND/CIDS/SDF/DIR NORM/117WHT17
4. Procedure
Subtask 23-44-00-040-052-A ** ON A/C NOT FOR ALL
A. Deactivation of the Maintenance Interphone Jack from the Forward Cargo Compartment
CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
   (1) Make match marks on the components that you disconnect/remove to record their connections/positions. This is important for the subsequent installation procedure.
   (2) If necessary, remove the isolation unit 4RJ3 (Ref. AMM TASK 23-44-42-000-001).
   (3) Disconnect the following electrical wires from the connector ESPM 205455:
     (a) FOR [4000RJ1] (JACK-MAINTENANCE INTERPHONE ENGINE 1)
       1 Disconnect the electrical wires from the insulation unit 4RJ3:
  • Pins 1F, 1G, 1H, 1J.
     (b) FOR [4000RJ2] (JACK-MAINTENANCE INTERPHONE ENGINE 2)
       1 Disconnect the electrical wires from the insulation unit 4RJ3:
  • Pins 2A, 2B, 2C, 2D.
   (4) Secure the disconnected electrical wires ESPM 205455.
   (5) On the isolation unit 4RJ3, install the PLUG - BLANKING, RED on the contacts which are not used.
     (a) Temporarily attach the harness with the disconnected electrical wires to the aircraft structure with the TIE WRAP(S).
   (6) If removed, install the isolation unit 4RJ3 again (Ref. AMM TASK 23-44-42-400-001).
   (7) Make a note to tell persons not to use the deactivated maintenance interphone jack:
     (a) Near the deactivated maintenance interphone jack apply a strip of self-adhesive aluminum-tape, Adhesive Film Tape-- Aluminium Foil - (Material No.05RAB9) . With a MARKER - INDELIBLE write on the tape "DO NOT USE MAINTENANCE INTERPHONE JACK".

  • Make sure that you apply the adhesive tape on the air inlet or on the fan cowl only.
5. Close-up
Subtask 23-44-00-865-068-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM/CIDS/DIR ESS/1150RHG01
** ON A/C NOT FOR ALL
49VUAIR COND/CIDS/SDF/DIR2 ESS18WHC06
49VUAIR COND/CIDS/SDF/DIR1 ESS15WHC05
** ON A/C NOT FOR ALL
49VUCOM DIR ESS/2157RHG02
** ON A/C NOT FOR ALL
49VUCOM NAV/CIDS/DIR2 ESS157RHG02
49VUCOM NAV/CIDS/DIR1 ESS150RHG01
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM06
121VUCOM NAV/CIDS/DIR NORM/1151RHM05
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR NORM/2156RHM07
121VUCOM NAV/CIDS/DIR NORM/1151RHM06
** ON A/C NOT FOR ALL
121VUCOM NAV/CIDS/DIR2 NORM156RHM06
121VUCOM NAV/CIDS/DIR1 NORM151RHM05
** ON A/C NOT FOR ALL
122VUAIR COND/CIDS/SDF/DIR NORM/214WHT18
122VUAIR COND/CIDS/SDF/DIR NORM/117WHT17
Subtask 23-44-00-860-065-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Make an entry in the logbook.
   (2) Close access to the isolation unit 4RJ3:
     (a) Install the partition wall FR35.5 or ceiling panels of the forward cargo compartment (Ref. AMM D/O 06-41-53-00) (Ref. AMM TASK 25-54-12-400-002) (Ref. AMM TASK 25-54-12-400-001):
  • For A318 between FR28 and FR30
  • For A319 between FR29 and FR34
  • For A320 between FR32 and FR34
  • For A321 on FR35.5.
     (b) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
     (c) Remove the access platform(s).
   (3) Make sure that the work area is clean and clear of tools and other items.
   (4) In the cockpit:
     (a) Remove the WARNING NOTICE(S).
   (5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:12:13 UTC
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