W DOC AIRBUS | MMEL ITEMS A320F

Hot Air Pressure Regulating Valve

21-63-03Hot Air Pressure Regulating Valve
Applicable to: -
NOTE:
  1. Unequal passengers distribution may cause high temperature in the rear cabin when the hot air pressure regulating valve is closed.
  2. The temperature in the cockpit may be low when the hot air pressure regulating valve is closed combined with single pack operation.
21-63-03-A Valve checked closed
Repair intervalNbr installedNbr requiredPlacard
C
13.04.2026		10Yes
(o)
May be inoperative provided that:

1)
The HOT AIR pb-sw is set to OFF, and

2)
The hot air pressure regulating valve is checked closed on the COND SD Page.

+ Reference
(o) Refer to OpsProc Hot Air Pressure Regulating Valve (Hot air pressure valve checked closed)
21-63-03-C Hot air pressure valve secured closed
Repair intervalNbr installedNbr requiredPlacard
C
13.04.2026		10Yes
(o)(m)
May be inoperative provided that the hot air pressure regulating valve is secured in the closed position.

+ Reference
(o) Refer to OpsProc Hot Air Pressure Regulating Valve (Affected valve secured in the closed position)
(m) AMM TASK 21-63-00-040-002
21-63-03Hot Air Pressure Regulating Valve
Applicable to: -
NOTE:
  1. Unequal passengers distribution may cause high temperature in the rear cabin when more than one trim air valves are inoperative or when the hot air pressure regulating valve is closed.
  2. The temperature in the cockpit may be low when the hot air pressure regulating valve is closed combined with single pack operation.
21-63-03-A Hot air pressure valve checked closed
Repair intervalNbr installedNbr requiredPlacard
C
13.04.2026		10Yes
(o)
May be inoperative in the closed position provided that:

1)
HOT AIR pb-sw is set to OFF, and

2)
Hot Air Pressure Regulating Valve is checked closed on the COND SD Page.

+ Reference
(o) Refer to OpsProc Hot Air Pressure Regulating Valve (Hot air pressure valve checked closed)
21-63-03-B All trim valve checked closed
Repair intervalNbr installedNbr requiredPlacard
C
13.04.2026		10Yes
(o)
May be inoperative in the open position provided that:

1)
HOT AIR pb-sw is set to OFF, and

2)
All Trim Air Valves are checked closed on the COND SD Page.

+ Reference
(o) Refer to OpsProc Hot Air Pressure Regulating Valve (Trim air valve checked closed)
21-63-03-C Hot air pressure valve secured closed
Repair intervalNbr installedNbr requiredPlacard
C
13.04.2026		10Yes
(o)(m)
May be inoperative provided that the hot air pressure regulating valve is secured in the closed position.

+ Reference
(o) Refer to OpsProc Hot Air Pressure Regulating Valve (Affected valve secured in the closed position)
(m) AMM TASK 21-63-00-040-002
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