Service difficulty report · Apu · Boeing 737890

Difficulty date
April 17, 2021
Submitted
June 2, 2021
Operation
Air carrier
Aircraft
N596AS
Make and model
Boeing 737890
Aircraft serial
35688
Aircraft time
46,814 hours, 13,975 cycles
Part
Apu
Condition
Malfunctioned
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

APU FAULT LIGHT ILLUMINATED DURING APU START. ATTEMPTED START OK. GROUNDED - YES. ACCOMPLISHED APU BITE CHECK PER B737-800 FIM 49-60 TASK 801 FAULT FOUND 49-41012 NO ROTATION APU SHUT DOWN STARTED APU NO FAULTS NOTED. DEFERRED APU CONTINUOUS OPERATION PER MEL 49-99A. PERFORMED FIM TASK 49-40 TASK 803. NO FAULTS NOTED FOR PAST APU CYCLES. PER SEAMC MEL 49-99A IS CLEARED. APU OPERATES NORMALLY.