W DOC AIRBUS | AMM A320F

Check of the Emergency-Exit Slide-Bottle Pressure because of a Low Pressure Indication on the Programming and Test Panel or Flight Attendant Panel


TASK 25-62-00-040-001-A
Check of the Emergency-Exit Slide-Bottle Pressure because of a Low Pressure Indication on the Programming and Test Panel or Flight Attendant Panel


ZONE: 150
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
Task Summary
Access Test Specific Tools Mhr E/T Nb Men
YESYESNO0.30.31
1. Reason for the Job
MMEL 25-62-07A
CABIN OVERWING EXIT SLIDE PRESS LOW MESSAGE ON THE PTP STATUS PAGE (IF INSTALLED)
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
1
MIRROR - INSPECTION, FLEXIBLE
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
150
AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
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 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
3. Job Set-up
Subtask 25-62-00-861-054-A
A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 25-62-00-010-064-A ** ON A/C NOT FOR ALL
B. Get Access
   (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 25-62-00-010-064-B ** ON A/C NOT FOR ALL
B. Get Access
   (1) Open the door of the overhead stowage compartment.
Subtask 25-62-00-010-064-G ** ON A/C NOT FOR ALL
B. Get Access
   (1) Open the applicable overheard stowage-compartment door.
   (2) Remove the screws (2) and the washers (4).
   (3) Carefully remove the inspection wall (1) from the overhead stowage compartment.
   (4) Open the access door (5).
4. Procedure
Subtask 25-62-00-210-063-A ** ON A/C NOT FOR ALL
A. Visual Inspection
   (1) Make sure that the pressure gage (2) shows the correct pressure.
NOTE: There are two different types of pressure gages (2) (MODEL A and MODEL B).
MODEL A has a green cursor that is sensitive to temperature.
MODEL B has a needle with an internal mechanism that is sensitive to temperature.
The two models 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 can adapt to this change in the inflation reservoir.
     (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 is permitted 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 is a range equal to AREA A, shows a pressure level that is permitted if sudden temperature changes occurred in the last 60 minutes.
     (c) FOR [7506MM] (RESERVOIR ASSY OWS L)
  • Use a MIRROR - INSPECTION, FLEXIBLE to see the pressure gage (2) on the left inflation reservoir (1).
     (d) If the pressure gage (2) shows an indication in AREA B:
       1 Let temperature conditions become stable and then examine the pressure again.
       2 If the pressure gage (2) continues to show an indication in AREA B:
         a Stop the operation of the applicable door.
         b Refer to the associated MMEL item.
         c Make an entry in the logbook.
Subtask 25-62-00-210-063-B ** ON A/C NOT FOR ALL
A. Visual Inspection
   (1) Make sure that the pressure gage (4) shows the correct pressure.
NOTE: There are two different types of pressure gages (4) (MODEL A and MODEL B).
MODEL A has a green cursor that is sensitive to temperature.
MODEL B has a needle with an internal mechanism that is sensitive to temperature.
The two models 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 can adapt to this change in the inflation reservoir.
     (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 is permitted 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 is a range equal to AREA A, shows a pressure level that is permitted if sudden temperature changes occurred in the last 60 minutes.
     (c) If the pressure gage (4) shows an indication in AREA B:
       1 Let temperature conditions become stable and then examine the pressure again.
       2 If the pressure gage (4) continues to show an indication in AREA B:
         a Stop the operation of the applicable door.
         b Refer to the associated MMEL item.
         c Make an entry in the logbook.
Subtask 25-62-00-210-063-F ** ON A/C NOT FOR ALL
A. Visual Inspection
   (1) Make sure that the pressure gage (3) shows the correct pressure.
NOTE: The pressure gage (3) has a needle with an internal mechanism that is sensitive to temperature. 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 than the gas pressure can adapt to this change in the inflation reservoir.
   (2) The indications are as follows:
  • The GREEN BAND shows a correct pressure level.
  • AREA B, which is a range equal to AREA A, shows a pressure level that is permitted if sudden temperature changes occurred in the last 60 minutes.
   (3) If the pressure gage (3) shows an indication in AREA B:
     (a) Let temperature conditions become stable and then examine the pressure again.
     (b) If the pressure gage (3) continues to show an indication in AREA B:
       1 Stop the operation of the applicable door.
       2 Refer to the associated MMEL item.
       3 Make an entry in the logbook.
5. Close-up
Subtask 25-62-00-410-059-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) 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).
   (7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
   (8) Make an entry in the logbook.
Subtask 25-62-00-410-059-B ** 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 door of the overhead stowage compartment.
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
   (4) Make an entry in the logbook.
Subtask 25-62-00-410-059-G ** ON A/C NOT FOR ALL
A. Close Access
   (1) Put the inspection wall (1) in position.
   (2) Install the washers (4) and the screws (2).
   (3) Tighten the screws (2).
   (4) Make sure that you can see the pressure gage (3) of the inflation reservoir (6) through the inspection window.
   (5) Close the applicable overhead stowage-compartment door.
   (6) Close the access door (5).
   (7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 25-62-00-862-054-A
B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.03.31 23:39:58 UTC