30-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
2. Trouble Shooting Chart
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
With left and right pitot heat switches off, all indicator lights fail to come on With circuit breaker closed and pitot heat switch on, probe heater fails to radiate heat Defective airplane wiring or P5-9 module Defective probe heater, airplane wiring, or P5-9 module Remove plug from P5-9 module and check at cable plug terminal for short to ground. IF -Short circuit exists -No short exists -Check for 115 volts ac on plug terminal, at P5-9 module. IF -No voltage -Voltage OK - Check for continuity between pins in P2 receptacle on P5-9 module. IF -No continuity -Continuity OK - Check for continuity between plug terminal and ground at P5-9 module. IF -No continuity - Repair circuit between master indicator light test switch relay and plug terminal Replace P5-9 module (Ref Repair circuit between circuit breaker on P18 panel and plug terminal Replace P5-9 module (Ref 30-09-111) Replace pitot-static probe 30-09-111)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
PITOT-STATIC TUBES, TEMPERATURE PROBE, AND ALPHA VANE ANTI-ICING SYSTEM -
_______________________________________________________________________
MAINTENANCE PRACTICES
_____________________
1. General_______
A. The tasks in this subject give references to the maintenance manual procedures for the combined window and pitot heat module, the pitot-static probes, the total air temperature probe, and the AOA sensor.
TASK 30-31-00-902-002
2. Combined Window and Pitot Heat Module (P5-9) References_______________________________________________________
A. References
(1) AMM 30-09-11/401, Combined Window and Pitot Heat Module (P5-9)
B. Procedure List
S 902-001
(1) For removal/installation and test procedures of the combined window and pitot heat module, refer to AMM 30-09-11/401.
TASK 30-31-00-902-007
3. Pitot Static Probe References_____________________________
A. References
(1)
AMM 34-11-00/501, Pitot Static System
(2)
AMM 34-11-01/501, Pitot Static System
(3)
AMM 34-11-11/401, Pitot Static Probe
(4)
AMM 34-11-11/601, Pitot Static Probe
(5)
AMM 34-11-11/701, Pitot Static Probe
B. Procedure List
S 902-004
(1)
For removal/installation procedures of the pitot static probe, refer to AMM 34-11-11/401.
S 902-018
(2)
For adjustment/test procedures of the pitot static probe, refer to AMM 34-11-00/501 or AMM 34-11-01/501.
S 902-005
(3)
For inpection/check procedures of the pitot static probe, refer to AMM 34-11-11/601.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
S 902-006
(4) For cleaning/painting procedures of the pitot static probe, refer to AMM 34-11-11/701.
TASK 30-31-00-902-009
4. Elevator Feel System Pitot Probe References___________________________________________
A. References
(1)
AMM 27-31-17/201, Elevator Pitot Static System
(2)
AMM 27-31-94/401, Feel System Pitot Tube
B. Procedure List
S 902-013
(1)
For maintenance practices and test procedures of the elevator feel system pitot probe, refer to AMM 27-31-17/201.
S 902-012
(2)
For removal/installation procedures of the elevator feel system pitot probe, refer to AMM 27-31-94/401.
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