SDR ASAA2017103022366

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: October 30, 2017
Submitted: October 31, 2017
Operation: Air carrier
Aircraft: N487AS
Make and model: Boeing 737990ER
Aircraft serial: 44108
Aircraft time: 8,098 hours, 2,635 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Warning Light
Condition: False Activation
Location: Apu
Stage of operation: TX
How discovered: O
Nature of condition: N
Precautionary procedure: D

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

What was found

DURING TAXI APU AC BLUE MAINT LIGHT ILLUMINATED. ACFT GROUNDED. WITH APU SHUTDOWN, CHECKED OIL QUANTITY. FOUND APU OIL QUANTITY TO BE FULL. BLUE MAINT LIGHT OUT. STARTED APU ON GROUND, NORMAL START, BLUE MAINT LIGHT REMAINS OUT AND ALL INDICATIONS NORMAL.