SDR HALA2009080400348

Service difficulty report · Apu · Boeing 7673CB

Difficulty date: August 4, 2009
Submitted: August 5, 2009
Operation: Air carrier
Aircraft: N592HA
Make and model: Boeing 7673CB
Aircraft serial: 11468
Aircraft time: 24,505 hours, 4,717 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Apu
Condition: Shutdown
Stage of operation: IN
How discovered: V
Nature of condition: J
Precautionary procedure: K

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

What was found

ETOPS SIGNIFICANT SYS - ON PWR TRANSITION FROM EXTERNAL PWR TO APU PWR, APU SHUTDOWN. RESTARTED AND EICAS MESSAGE SIGNAL FMC L OPERATION. CYCLED R FMC PWR GND OPS CHK OK. PERFORMED BITE CHECK ON APU IAW FIM 49-11-00, FIG 103 NO FAULT NOTED.

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