Service difficulty report · Ignition Unit · Boeing 737990ER

Difficulty date
April 26, 2022
Submitted
April 28, 2022
Operation
Air carrier
Aircraft
N467AS
Make and model
Boeing 737990ER
Aircraft serial
36362
Aircraft time
28,999 hours, 9,336 cycles
Part
Ignition Unit
Part number
38880587
Part serial
121405
Condition
Faulty
Location
Apu
Part time
3,203 hours, 5,391 cycles
Stage of operation
TX
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

APU FAULT LIGHT DURING START AFTER LANDING. GROUNDED - YES. REPLACED IGNITOR LEAD PER B737-900 AMM 49-41-52 AND IGNITION UNIT PER AMM 49-41-31, OPS CHECK GOOD NO FAULTS/DEFECTS NOTED.