Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
October 22, 2022
Submitted
October 26, 2022
Operation
Air carrier
Aircraft
N477AS
Make and model
Boeing 737990ER
Aircraft serial
40716
Aircraft time
26,437 hours, 8,197 cycles
Part
Warning Light
Condition
False Activation
Location
Apu
Stage of operation
NR
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 ON START. GROUNDED - YES. FOUND FAULT CODE 49-41012 ON BITE TEST, APU REMAINS ON MEL 49-1B. PERFORMED B737-900 FIM 49-40 TASK 803 FAULT 49-41012 NOT CURRENT NO OTHER ACTIVE FAULTS ASSOCIATED NOT ACTIVE FOR 8 STARTS OPERATED APU SEVERAL TIMES NO FAULTS.