Service difficulty report · Heater · Boeing 737990ER

Difficulty date
February 20, 2021
Submitted
February 23, 2021
Operation
Air carrier
Aircraft
N461AS
Make and model
Boeing 737990ER
Aircraft serial
36363
Aircraft time
26,071 hours, 8,318 cycles
Part
Heater
Condition
Malfunctioned
Location
Pitot Tube
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AUX PITOT HEAT FAILED. GROUNDED - YES. GVI AND CYCLED F/O PROBE HEAT IND AND AUTO HEAT C/B'S AND GVI WINDOW AND PROBE HEAT MODULE P5-9 AND ACCESS WIRING AND CONNECTORS. NO DEFECTS NOTED. SYS TEST OF PROBE HEAT CHECKS OK REF B737-900 AMM 30-31-00-730-801. AUX PITOT HEAT CHECKS OK REF AMM 30-31-00-730-801.