SDR 2004UALA00782

Service difficulty report · Generator · Boeing 737322

Difficulty date: August 8, 2004
Submitted: August 31, 2004
Operation: Air carrier
Aircraft: N362UA
Make and model: Boeing 737322
Aircraft serial: 24455
Aircraft time: 43,518 hours, 25,485 cycles
Engine: Ge CFM56*
System (JASC): 2420 · AC Generation System
Part: Generator
Condition: Malfunctioned
Location: Apu
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

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

What was found

APU GEN ON LINE, FOUND VOLTAGE TO INDICATE 127VAC, WITH COCKPIT PANEL LIGHTS DIM, E&E LIGHTS VERY DIM AND FLUCTUATING, EXHAUST FAN NORMAL CB POPS. APU POWER IS NO GOOD. APU GEN C-B (C899) CONTACT B2 TERMINAL LUG & 3EA WIRES INSULATION BURNT 8 INCHES FROM B2 LUG. SUSPECT TERMINAL LUG LOOSE, REPLACED B2 LUG & WIRE, CLEANED B3 LUG & REPLACED NR 1 APU GEN BREAKER C889.