SDR ASAA12510902

Service difficulty report · Unknown · Boeing 737890

Difficulty date: January 5, 2012
Submitted: January 9, 2012
Operation: Air carrier
Aircraft: N506AS
Make and model: Boeing 737890
Aircraft serial: 35690
Aircraft time: 13,413 hours, 4,352 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: Unknown
Condition: Unknown
Location: Apu
Stage of operation: TX
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

AFTER LANDING APU GEN READ 0 VOLTS/0 FREQ WOULD NOT GO ON LINE WITH APU OFF BUS LIGHT ILLUMINATED. ACCOMPLISHED APU BITE TEST REF FIM TASK 49 60 TASK 801 FOUND FAULT CODE 49 31171 LOGGED. REF FIM TASK 49 31 00 810 808 ACCOMPLISHED APU STARTING OPERATIONAL CHECK FAULT CODE FOUND TO BE INTERMITTENT FAULT CODE CLEARED WITH NO OTHER OCCURRENCES FOUND. GROUND VERIFICATION CHECKS NORMAL.