SDR ASAA2014020906814

Service difficulty report · Connector · Boeing 737890

Difficulty date: February 9, 2014
Submitted: February 12, 2014
Operation: Air carrier
Aircraft: N597AS
Make and model: Boeing 737890
Aircraft serial: 35689
Aircraft time: 22,377 hours, 6,994 cycles
System (JASC): 4997 · APU System Wiring
Part: Connector
Condition: Dirty
Location: Apu
Stage of operation: TX
How discovered: O
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

DURING APU START ATTEMPT, APPEARED TO HAVE NO EGT RISE FOLLOWED BY AN AMBER FAULT LIGHT, ATTEMPTED SECOND START AFTER WAITING 5 MIN ALLOWING FAULT LIGHT TO GO OUT. SECOND ATTEMPT HAD SAME RESULT. ACFT GROUNDED. DISCONNECTED & INSPECTED CONNECTOR P22 ON APU FUEL CONTROL. CLEANED CONTAMINATION FROM CONNECTOR. APU FUEL CONTROL PASSES TESTS. RECONNECTED CONNECTOR P22. APU STARTS AND RUNS NORMAL. NO FAULT MESSAGES. REF FIM 49-31-TASK 807, NO HISTORY PAST 60 DAYS.