Reactivation of the Heating of the Pilot Probes, Static Probes, Angle of Attack Sensors and of the Probe Heat Computer (PHC)

TASK 30-31-00-440-002-A
Reactivation of the Heating of the Pilot Probes, Static Probes, Angle of Attack Sensors and of the Probe Heat Computer (PHC)

1. Reason for the Job
MMEL 30-31-01B
PROBE HEAT COMPUTER (PHC)
MMEL 30-31-01C
PROBE HEAT COMPUTER (PHC)
MMEL 30-31-03B
STATIC PORTS HEATER
MMEL 30-31-03C
STATIC PORTS HEATER
MMEL 30-31-03D
STATIC PORTS HEATER
MMEL 30-31-04A
ANGLE OF ATTACK (AOA) PROBES HEATING
MMEL 30-31-04B
ANGLE OF ATTACK (AOA) PROBES HEATING
MMEL 30-31-04C
ANGLE OF ATTACK (AOA) PROBES HEATING
MMEL 30-31-02A
PITOT HEATER
MMEL 30-31-02B
PITOT HEATER
MMEL 30-31-02C
PITOT HEATER
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)

3. Job Set-up
Subtask 30-31-00-861-055-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 30-31-00-941-055-A

B. Aircraft Maintenance Configuration
(1) On the OVERHEAD CTL & IND Panel 25VU:

push the PROBE/WINDOW HEAT pushbutton switch (the ON legend comes on).

4. Procedure
Subtask 30-31-00-810-051-A

A. Reactivation of the Heating of the Pitot Probes
(1) On the OVERHEAD CTL & IND Panel 25VU:

Release the PROBE/WINDOW HEAT pushbutton switch (AUTO).
The ON legend of the PROBE/WINDOW HEAT pushbutton switch goes off.

5. Close-up
Subtask 30-31-00-862-055-A

A. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:30:43 UTC