W DOC AIRBUS | AMM A320F

Check Door/Emergency Exit/Offwing Escape Slide/Raft Inflation Reservoir Pressure

TASK 25-62-00-210-001-A
Check Door/Emergency Exit/Offwing Escape Slide/Raft Inflation Reservoir Pressure

ZONE: 150
ZONE: 220
ZONE: 230
ZONE: 250
ZONE: 260
ZONE: 800
ZONE: 831
ZONE: 832
ZONE: 841
ZONE: 842
FIN: 7500MM
FIN: 7501MM
FIN: 7502MM
FIN: 7503MM
FIN: 7506MM ** ON A/C NOT FOR ALL
FIN: 7507MM ** ON A/C NOT FOR ALL
FIN: 7685MM ** ON A/C NOT FOR ALL
FIN: 7686MM ** ON A/C NOT FOR ALL
FIN: 7693MM ** ON A/C NOT FOR ALL
FIN: 7694MM ** ON A/C NOT FOR ALL
FIN: 7774MM ** ON A/C NOT FOR ALL
FIN: 7775MM ** ON A/C NOT FOR ALL
FIN: 7776MM ** ON A/C NOT FOR ALL
FIN: 7777MM ** ON A/C NOT FOR ALL
1. Reason for the Job
Refer to the MPD TASK: 256241-01
CHECK DOOR/EMERGENCY EXIT/OFFWING ESCAPE SLIDE/RAFT INFLATION RESERVOIR PRESSURE.
NOTE: This task is not applicable for deactivated passenger/crew doors/emergency exits.
NOTE: This task is only applicable if the inflation reservoir is not connected to CIDS.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT)
FOR [7506MM] (RESERVOIR ASSY OWS L)
No specific
AR
MIRROR - INSPECTION
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
150
AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
220
FWD CAB UTILITY AREAS
230
FWD PASSENGER COMPARTMENT
250
AFT PASSENGER COMPARTMENT
260
AFT CABIN UTILITY AREA
800
DOORS
831
FORWARD PASSENGER/CREW DOOR
832
AFT PASSENGER/CREW DOOR
841
FORWARD PASSENGER/CREW DOOR
842
AFT PASSENGER/CREW DOOR
FOR [7506MM] (RESERVOIR ASSY OWS L)
151KW
FOR [7507MM] (RESERVOIR ASSY OWS R)
152KW
 C. 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 25-62-44-000-002-A
Removal of the Left Escape-Slide Pack-Assembly
TASK 25-62-44-000-012-A
Removal of the Left-Hand Escape-Slide-Raft Pack-Assembly
TASK 25-62-44-000-802-A
Removal of the Right Escape-Slide Pack-Assembly
TASK 25-62-44-000-804-A
Removal of the Right-Hand Escape-Slide-Raft Pack-Assembly
TASK 25-62-44-400-006-A
Installation of the Left Escape-Slide Pack-Assembly
TASK 25-62-44-400-007-A
Installation of the Left-Hand Escape-Slide-Raft Pack-Assembly
TASK 25-62-44-400-802-A
Installation of the Right Escape-Slide Pack-Assembly
TASK 25-62-44-400-803-A
Installation of the Right-Hand Escape-Slide-Raft Pack-Assembly
TASK 25-62-46-000-001-A
Removal of the Inflation Reservoir for the Offwing Escape Slide
TASK 25-62-46-400-001-A
Installation of the Inflation Reservoir for the Offwing Escape Slide
TASK 25-62-49-000-001-A
Removal of the Escape-Slide Inflation Reservoir
TASK 25-62-49-400-001-A
Installation of the Escape-Slide Inflation Reservoir
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
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
F Inflation Reservoir (Pressure Gages) ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 25-62-00-861-056-A
A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 25-62-00-010-061-A ** ON A/C NOT FOR ALL
B. Get Access
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
   (1) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
   (2) Put an ACCESS PLATFORM 2M (6 FT) in position adjacent to the aft cargo-compartment door.
   (3) Set AFT CARGO COMPT light switch 8LU to the ON position.
   (4) FOR [7506MM] (RESERVOIR ASSY OWS L)
     (a) Remove access panel 151KW.
   (5) FOR [7507MM] (RESERVOIR ASSY OWS R)
     (a) Remove access panel 152KW.
Subtask 25-62-00-010-061-B ** ON A/C NOT FOR ALL
B. Access to the Inflation Reservoir (4)
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
   (1) FOR [7774MM] (PRESSURE BOTTLE DOOR 2LH), [7775MM] (PRESSURE BOTTLE DOOR 2RH), [7776MM] (PRESSURE BOTTLE DOOR 3LH), [7777MM] (PRESSURE BOTTLE DOOR 3RH)
Do one of the two applicable steps:
  • Open the door of the overhead stowage compartment.
  • Or, push the quick-release fasteners (7) and open the access door (5).
Subtask 25-62-00-010-061-C ** ON A/C NOT FOR ALL
B. Access to the Inflation Reservoir
F Inflation Reservoir (Pressure Gages) ** ON A/C NOT FOR ALL
   (1) Open the door of the overhead stowage compartment.
4. Procedure
Subtask 25-62-00-210-050-A ** ON A/C NOT FOR ALL
A. Visual Inspection
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
   (1) At the passenger/crew doors and in the aft cargo-compartment, examine the pressure gage (3) of the inflation reservoirs.
NOTE: You can see the pressure gage (3) through the inspection window in the decorative-cover (1).
     (a) FOR [7506MM] (RESERVOIR ASSY OWS L)
Use an MIRROR - INSPECTION to see the pressure gage (3).
   (2) Make sure that the pressure gage (3) shows the correct pressure.
NOTE: There are two different types of pressure gage (3) (MODEL A and MODEL B). MODEL A has a green cursor which is temperature sensitive. MODEL B has a needle with an internal mechanism, which is temperature sensitive. They can give incorrect pressure indications when there are sudden temperature changes from a cold to a warm environment. This usually occurs after a longer flight and when the aircraft door is opened in a warm environment. The cursor/needle moves to changes in temperature faster or slower than the gas pressure in the inflation reservoir can adapt.
     (a) The indications for MODEL A are as follows:
  • The needle in AREA A (green cursor width) shows that the pressure level is correct.
  • The needle in AREA B, which is half the range of AREA A, shows a pressure level that can be accepted if sudden temperature changes occurred in the last 60 minutes.
     (b) The indications for MODEL B are as follows:
  • The GREEN BAND shows a correct pressure level.
  • AREA B, which has a range equal to AREA A, shows a pressure level that can be accepted if sudden temperature changes occurred in the last 60 minutes.
     (c) If the pressure gage (3) shows an indication in AREA B or below AREA B:
       1 Let temperature conditions become stable and then examine the pressure gage (3) again.
       2 If the pressure gage (3) continues to show an indication in AREA B or below AREA B, replace the escape-slide/escape-slide raft pack-assembly and/or the inflation reservoir (2):
         a At the doors, replace the escape-slide/escape-slide raft pack-assembly:
         b In the aft cargo-compartment, replace the inflation reservoir (2):
Subtask 25-62-00-210-050-B ** ON A/C NOT FOR ALL
A. Visual Inspection
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
   (1) Examine the pressure gages (8):
     (a) At the door escape-slides/escape-slide rafts.
NOTE: You can see the pressure gage (8) through the inspection window in the decorative-cover (1).
     (b) And at one of the two applicable locations:
  • Through the inspection window (2) in the cover (3)
  • Through the opening in the lining (6).
   (2) Make sure that the pressure gage (8) shows the correct pressure.
NOTE: There are two different types of pressure gage (8) (MODEL A and MODEL B). MODEL A has a green cursor which is temperature sensitive. MODEL B has a needle with an internal mechanism, which is temperature sensitive. They can give temporary low pressure indications when there are sudden temperature changes from a cold to a warm environment. This usually occurs after a longer flight and when the aircraft door is opened in a warm environment. The cursor/needle moves to changes in temperature faster than the gas pressure in the inflation reservoir can adapt.
     (a) The indications for MODEL A are as follows:
  • The needle in AREA A (green cursor width) shows that the pressure level is correct.
  • The needle in AREA B, which is half the range of AREA A, shows a pressure level that can be accepted if sudden temperature changes occurred in the last 60 minutes.
     (b) The indications for MODEL B are as follows:
  • The GREEN BAND shows a correct pressure level.
  • AREA B, which has a range equal to AREA A, shows a pressure level that can be accepted if sudden temperature changes occurred in the last 60 minutes.
     (c) If the pressure gage (8) shows an indication in AREA B or below AREA B:
       1 Let the temperature conditions become stable and then examine the pressure gage (8) again.
       2 If the pressure gage (8) continues to show an indication in AREA B or below AREA B, replace the escape-slide/escape-slide raft pack-assembly and/or the inflation reservoir (4):
         a At the doors, replace the escape-slide/escape-slide raft pack-assembly:
         b At one of the two other applicable locations:
Subtask 25-62-00-210-050-F ** ON A/C NOT FOR ALL
A. Visual Inspection
F Inflation Reservoir (Pressure Gages) ** ON A/C NOT FOR ALL
   (1) Examine the pressure gage (6) of the inflation reservoirs:
  • At the passenger doors at the decorative covers (1)
  • In the overhead stowage compartments at the panel (2).
NOTE: You can see the pressure gages (6) in the cabin through the inspection windows (3).
   (2) Make sure that the pressure gage (6) shows the correct pressure.
NOTE: The pressure gage (6) has a needle with an internal mechanism which is temperature sensitive. It can give incorrect pressure indications when there are sudden temperature changes from a cold to a warm environment. This usually occurs after a longer flight and when the aircraft door is opened in a warm environment. The needle moves to changes in temperature faster or slower than the gas pressure in the inflation reservoir can adapt.
     (a) The indications are as follows:
  • The GREEN BAND shows a correct pressure level.
  • AREA B, which has a range equal to AREA A, shows a pressure level that can be accepted if sudden temperature changes occurred in the last 60 minutes.
     (b) If the pressure gage (6) shows an indication in AREA B or below AREA B:
       1 Let the temperature conditions become stable and then examine the pressure gage (6) again.
       2 If the pressure gage (6) continues to show an indication in AREA B or below AREA B, replace the escape-slide/escape-slide raft pack-assembly and/or the inflation reservoirs (4) and (5):
         a At the passenger doors, replace the escape-slide/escape-slide raft pack-assembly:
         b In the overhead stowage compartment, replace the inflation reservoirs (4) and (5):
5. Close-up
Subtask 25-62-00-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) FOR [7506MM] (RESERVOIR ASSY OWS L)
     (a) Install access panel 151KW.
   (3) FOR [7507MM] (RESERVOIR ASSY OWS R)
     (a) Install access panel 152KW.
   (4) Set AFT CARGO COMPT light switch 8LU to the OFF position.
   (5) Remove the access platform(s).
   (6) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
Subtask 25-62-00-410-050-B ** ON A/C NOT FOR ALL
A. Close Access
F Inflation Reservoir (Pressure Gages) - Component Location ** ON A/C NOT FOR ALL
   (1) FOR [7774MM] (PRESSURE BOTTLE DOOR 2LH), [7775MM] (PRESSURE BOTTLE DOOR 2RH), [7776MM] (PRESSURE BOTTLE DOOR 3LH), [7777MM] (PRESSURE BOTTLE DOOR 3RH)
Make sure that the work area is clean and clear of tools and other items.
Do one of the two applicable steps:
  • Close the door of the overhead stowage compartment.
  • Or, close the access door (5) and push the quick-release fasteners (7) to lock the door (5).
   (2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 25-62-00-410-050-C ** ON A/C NOT FOR ALL
A. Close Access
F Inflation Reservoir (Pressure Gages) ** 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 door of the overhead stowage compartment.
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 25-62-00-862-056-A
B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.03.31 23:40:13 UTC
"Aviabrain" 2025