TASK 31-24-00-735-041
10. Airspeed Signals Test
_____________________
A. Special Tools and Equipment
(1) Pneumatic Test unit
B. References
(1)
AMM 34-11-00/501, Pitot-Static System
(2)
AMM 34-11-01/501, Pitot-Static System
C. Access
(1) Location Zone
101 Control Cabin - Left
102 Control Cabin - Right
D. Procedure
S 865-042
(1)
Make sure you did the Prepare for Input Parameter Test task.
S 485-008
(2)
Connect the pneumatic test unit to the pitot-static system (Ref 34-11-00/501).
S 735-043
(3)
Do this test of the airspeed signals:
(a) Set the portable tester to SUBFRAME 0, WORD 19.
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A 737-300/400/500MAINTENANCE MANUAL
(b)
Use the pneumatic test unit to make the airspeeds shown in the table.
(c)
Make sure the portable tester display agrees with the values in the table. ~................................................ | AIRSPEED (KNOTS) | PORTABLE TESTER DISPLAY | .................................................. | 100 | 7651 to 0126 (nominal 0000) | .................................................. | 400 | 4145 to 4421 (nominal 4273) | 2..................….............................1
S 865-046
(4)
Set the pneumatic test unit to the usual pressure of the air.
S 085-047
(5)
Disconnect the pneumatic test unit from the pitot-static system.
S 865-048
(6)
If you will do no more tests, then do this task: "Put the Airplane to its Usual Condition."
TASK 31-24-00-735-049
11. ATC Event (Radio Keying) Signals Test
_____________________________________
A. References
(1) AMM 23-21-00/501, VHF Communication System
B. Access
(1) Location Zone
101 Control Cabin - Left
102 Control Cabin - Right
C. Procedure
S 865-050
(1)
Make sure you did the Prepare for Input Parameter Test task.
S 865-051
(2)
Make sure all the VHF transceivers are serviceable (AMM 23-21-00/501).
S 865-053
(3)
Tune all the transceivers to approved frequencies.
S 865-054
(4)
Set the portable tester to SUBFRAME 0, WORD 9.
S 735-058
(5)
Do this test of the VHF-1 Signals:
(a)
Set the captain's audio selector panel to VHF-1.
(b)
Make sure the BIT 1 light is off.
(c)
Push the captain's PTT button.
(d)
Make sure the BIT 1 light is on.
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31-24-00
ú ú 11 Page 509 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(e) Release the PTT button.
S 735-059
(6) Do this test of the VHF-2 Signals: (a) Set the captain's audio selector panel to VHF-2. (b) Make sure the BIT 1 light is off. (c) Push the captain's PTT button. (d) Make sure the BIT 1 light is on. (e) Release the PTT button.
S 735-060
(7) Do this test of the VHF-3 Signals: (a) Set the captain's audio selector panel to VHF-3. (b) Make sure the BIT 1 light is off. (c) Push the captain's PTT button. (d) Make sure the BIT 1 light is on. (e) Release the PTT button.
S 735-063
(8) Use the first officer's audio selector panel and the first officer's PTT button to do the tests again.
S 865-065
(9) If you will do no more tests, then do this task: to its Usual Condition." "Put the Airplane
TASK 31-24-00-865-112
12. Put the Airplane to its Usual Condition
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