SDR ASAA2016030915847

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: March 9, 2016
Submitted: March 11, 2016
Operation: Air carrier
Aircraft: N508AS
Make and model: Boeing 737890
Aircraft serial: 35691
Aircraft time: 29,340 hours, 8,930 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: O

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

What was found

APU BLUE MAINTENANCE LIGHT ILLUMINATED ON APU START AFTER LANDING. ACFT GROUNDED. ACCOMPLISHED APU BITE, OIL LEVEL FULL, NO FAULTS NOTED, NO FAULTS IN HISTORY. OPERATED APU, GENERATORS, AND AIR CONDITIONING. APU OPS NORMAL. BLUE MAINTENANCE LIGHT IS A NUISANCE FAULT. APU OK FOR CONTINUED SERVICE.