**ON A/C 052-055, 057-057,
 Subtask 35-23-00-860-052
 F. Preparation for the test
 (1) Make sure that the AHS ON pushbutton switch 899WR on the overhead panel 21VU is in the normal position.
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 4. Procedure
_________
R **ON A/C 001-049, 051-051, 056-056, 058-099, 101-105, 151-199, 201-299,
 Subtask 35-23-00-720-052
 A. Do the functional test of the automatic mask release.
 NOTE : The prerecorded announcements are normally established by the
____ operator in accordance with the PRAM-Vendor. You can hear the emergency announcement only if it is recorded.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. At the vacuum source:  On the panel 21VU:
 -slowly increase the pressure to  - the SYS ON indicator light comes on
 14800 ft. (4500 m).  at 14000 +0 -500 ft. (4260 +0 -150 m).
 In the cabin:
 -
the emergency announcement starts at 14000 +0 -500 ft. (4260 +0 -150 m).

 On all the emergency oxygen containers:

 -
the doors open to the maximum permitted by the door stops.

 2. At the vacuum source:
 -slowly decrease the pressure to
 0 ft. (0 m).

 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
3. On the panel 50VU:
-push the TMR RESET pushbutton switch.
-release the TMR RESET
pushbutton switch.

4. On the Forward Attendant Panel (FAP) 120RH:
 -push the PRE REC ANN. STOP pushbutton switch.
 **ON A/C 052-055, 057-057,
 Subtask 35-23-00-720-052-BOn the panel 50VU:
-
the ON indicator light on the TMRRESET pushbutton switch comes on.

 On the panel 21VU:

 -
the SYS ON indicator light goes off.

On the panel 50VU:

-
the ON indicator light on the TMR RESET pushbutton switch goes off.

In the Cabin:

-
the emergency announcement stops.

 A. Do the functional test of the automatic mask release. NOTE : The prerecorded announcements are normally established by the
____ operator in accordance with the PRAM-Vendor. You can hear the emergency announcement only if it is recorded.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. At the vacuum source:  On the panel 21VU:
 -slowly increase the pressure to - the SYS ON indicator light comes on
 14800 ft. (4500 m).  at 14000 +0 -500 ft. (4260 +0 -150 m).
 In the cabin:
 -the emergency announcement starts at 14000 +0 -500 ft. (4260 +0 -150 m).
 On all the emergency oxygen containers:

 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
2. At the vacuum source:
 -slowly decrease the pressure to 0 ft. (0 m).
 3. On the panel 50VU:
-push and hold the TMR RESET pushbutton switch.
-release the TMR RESET
pushbutton switch.

4. On the Forward Attendant Panel (FAP) 120RH:
 -push the PRE REC ANN. STOP pushbutton switch.
 5. In the cabin at the first and second seatrow:
 -close the doors of all related emergency oxygen containers.
 6. On the overhead panel 21VU:
-push the AHS ON pushbutton switch.
7. At the vacuum source:
-slowly increase the pressure to 16800 ft. (5120 m).
-the doors open to the maximum permitted by the door stops.
On the panel 50VU:
-
the ON indicator light on the TMRRESET pushbutton switch comes on.

 On the panel 21VU:

 -
the SYS ON indicator light goes off. On the panel 50VU:

-
the ON indicator light on the TMRRESET pushbutton switch goes off.

In the Cabin:

-
the emergency announcement stops.

On the overhead panel 21VU:
-
the On legend in the AHS ONpushbutton switch comes on.

On the panel 21VU:

-
the SYS ON indicator light comes onat 16000 +0 -500 ft. (4870 +0 -150 m).

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
In the cabin:

 - the emergency announcement starts at
　
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