SDR ASAA2014011112370

Service difficulty report · Apu · Boeing 737890

Difficulty date: January 11, 2014
Submitted: January 13, 2014
Operation: Air carrier
Aircraft: N518AS
Make and model: Boeing 737890
Aircraft serial: 35693
Aircraft time: 19,011 hours, 5,718 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Apu
Condition: Malfunctioned
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

APU START SWITCH TO STRT EGT BEGAN TO RISE THEN APU FAULT LIGHT ILLUMINATED AND APU SHUTDOWN. ACFT GROUNDED. ACCOMPLISHED BITE CHECK, VERIFIED IN FAULT HISTORY MAINT MSG 49-41012. NO APU ROTATION SHUTDOWN. INSPECTED MAGNETIC DRAIN PLUG, NO CONTAMINATION NOTED. RAN APU, OPS CHECK NORMAL. FAULT CLEARED REF FIM TASK 49-40, TASK 803.