SDR ASAA2012121993504

Service difficulty report · Apu · Boeing 737*

Difficulty date: December 19, 2012
Submitted: December 21, 2012
Operation: Air carrier
Aircraft: N403AS
Make and model: Boeing 737*
Aircraft serial: 41730
Aircraft time: 340 hours, 138 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Apu
Condition: Unknown
Stage of operation: TX
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 INOPERATIVE. PERFORMED BITE CHECK, FOUND MAINT MESSAGE 49-31014 APU OVERSPEED, ACCOMPLISHED FIM TASK 49-30 TASK 802. RESTARTED THE APU, NO DEFECT NOTED. RAN APU WITH FULL LOAD FOR 5 MINS. PERFORMED APU USUAL SHUTDOWN. PERFORMED BITE CHECK NO FAULT FOUND.