SDR UALA2012111206485

Service difficulty report · Battery · Boeing 747422

Difficulty date: November 11, 2012
Submitted: November 27, 2012
Operation: Air carrier
Aircraft: N182UA
Make and model: Boeing 747422
Aircraft serial: 25279
Aircraft time: 89,267 hours, 10,768 cycles
Engine: Pwa PW4056
System (JASC): 2432 · Battery/Charger System
Part: Battery
Condition: Faulty
Location: Apu
Stage of operation: NR
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 WILL NOT START, APU BATTERY CHARGER ON EICAS. REPLACED APU BATTERY PER AMM, OP CHECK OKAY. BATTERY CHARGING NORMALLY, NO MESSAGES. REPAIR- :BLED FUEL LINE PER MM 28 25 00, AFTER BLEEDING FUEL LINE APU STARTED 5X WITH NO ISSUES. APU OPERATED IN ALL MODES, NO FAULTS NOTED.