737NG皮托管加温不工作故障隔离

花少 · 发表于 2013-6-9 21:20:19

可以参考学习，有不对的请指出。谢谢737NG皮托管加温不工作故障隔离
ICE AND RAIN PROTECTION - PITOT AND STATIC - INTRODUCTION
Purpose
The probe anti-icing system prevents ice on the air data probes.
General
You control the probe heat from the window/pitot heat module on the P5 forward overhead panel.
  The probes have integral heaters that use electrical power forheat.
  The probe anti-icing system supplies heat to these probes:
  * Total air temperature probe
  * Pitot probes (5).
  The static system sense ports are not part of the probe heat system. These ports are flush with the fuselage and heat is not
necessary.
ICE AND RAIN PROTECTION - PITOT AND STATIC - INTRODUCTION
Purpose
The window/pitot heat module does these things:
* Controls the electric power to the probe anti-icing systems
* Gives the flight crew indication of the probe anti-icing system status.
Location
  The window/pitot heat module is on the P5 forward overhead
  panel.
General Description
There are two air data probe heater systems, A and B. These toggle switches let the crew turn on the probe heat systems:
* PROBE HEAT A
* PROBE HEAT B.
There are two system indication light banks, one for the A
system and one for the B system. The lights come on when the
probe heaters do not draw electrical current.

(e) If the L ELEV PITOT light comes on, do this task: L ELEV PITOT Light is On –  Fault  Isolation, 30-31 TASK 805 (f) If the R ALPHA VANE light comes on, do this task: R ALPHA VANE Light is On  – Fault Isolation, 30-31 TASK 808
(g) If the R ELEV PITOT light comes on, do this task: R ELEV PITOT Light is On – Fault Isolation, 30-31 TASK 809 (h) If the TEMP PROBE light comes on, do this task: TEMP PROBE Light is On –  Fault Isolation, 30-31 TASK 810
(i)  If no air data sensor heat light comes on, then continue. (3) Make sure the applicable air data sensor gets hot:
(a) Put the PROBE HEAT A and B switches in the ON position.    WARNING: THE AIR DATA SENSORS CAN GET VERY HOT. DO NOT TOUCH THE SENSORS.YOU MAY GET BURNED IF YOU TOUCH THE SENSOR.
(b) Make sure the air data sensor heater gets hot.    NOTE: You can spray the air data sensor with water to check for heat.
(c) If any air data sensor does not get hot, then do the Fault Isolation Procedure below. (d) If all the air data sensor gets hot, then there was an intermittent fault.
(4) Put the PROBE HEAT A and B switches in the OFF position.
F.  Fault Isolation Procedure (1)  Replace the window and pitot heat module.    These are the tasks:    Window/Pitot Heat Module (P5-9) Removal, AMM TASK 30-41-41-000-801,    Window/Pitot Heat Module (P5-9) Installation, AMM TASK 30-41-41-400-801. (a) Put the PROBE HEAT A and B switches in the ON position.    WARNING: THE AIR DATA SENSORS CAN GET VERY HOT. DO NOT TOUCH THE SENSORS.    YOU MAY GET BURNED IF YOU TOUCH THE SENSOR. (b)  Make sure the applicable air data sensor heater gets hot.    NOTE: You can spray the air data sensor with water to check for heat. (c) If the air data sensor gets hot, then you corrected the fault.