SDR ASAA2017071621389

Service difficulty report · Fault Light · Boeing 737890

Difficulty date: July 16, 2017
Submitted: July 18, 2017
Operation: Air carrier
Aircraft: N512AS
Make and model: Boeing 737890
Aircraft serial: 39043
Aircraft time: 34,411 hours, 10,398 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Fault Light
Condition: False Activation
Location: Apu
Stage of operation: NR
How discovered: 9
Nature of condition: N
Precautionary procedure: O

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

What was found

ON APU START, THE APU AMBER FAULT LIGHT ILLUMINATED, WITH NO START FAULT MESSAGE 49-15004. INLET DOOR SHUTDOWN. ACFT GROUNDED. PERFORMED MULTIPLE SUCCESSFUL GROUND STARTS IAW AMM 49-11-00-710-801. DURING OPERATION, NO FAILURES FOUND IN CURRENT STATUS OF APU BITE IAW FIM 49-60 TASK 801.