SDR ASAA2018061165005

Service difficulty report · Apu · Boeing 737990ER

Difficulty date: June 6, 2018
Submitted: June 11, 2018
Operation: Air carrier
Aircraft: N435AS
Make and model: Boeing 737990ER
Aircraft serial: 43292
Aircraft time: 18,535 hours, 6,113 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) 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 DID NOT START ON GROUND, FAULT LIGHT ILLUMINATED AND EXTINGUISHED AFTER 5 MINUTES IAW THE QRH. ACFT GROUNDED. ATTEMPTED START ON GROUND . APU STARTED NORMALLY. APU ENGINE PARAMETERS AND READINGS ARE NORMAL. NO ACFT HISTORY. FOUND MESSAGE 49-41011, NO FLAME SHUTDOWN, ON CDU.