SDR HALA2011082100377

Service difficulty report · Apu · Boeing 7673G5

Difficulty date: August 21, 2011
Submitted: August 22, 2011
Operation: Air carrier
Aircraft: N584HA
Make and model: Boeing 7673G5
Aircraft serial: 24258
Aircraft time: 96,364 hours, 18,395 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

ETOPS SIGNIFICANT SYS - AFTER TURNING OFF THE LT PACK AT THE GATE APU AUTO SHUTDOWN NOTE: JUST BEFORE SHUTDOWN APU BLEED DUCT PRESSURE DROPPED TO APPROX 10 PSI. PERFORMED APU ECU BITE IAW FIM 49-11-00. FAULT MSG SHOWED REVERSE FLOW, RESTARTED APU AND NO DEFECTS NOTED AND APU BLEED AIR NORMAL, WHILE CYCLING BOTH PACKS ON AND OFF.

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