SDR UALA2009121503885

Service difficulty report · Electronic Unit · Boeing 747422

Difficulty date: December 14, 2009
Submitted: December 21, 2009
Operation: Air carrier
Aircraft: N177UA
Make and model: Boeing 747422
Aircraft serial: 24384
Aircraft time: 81,113 hours, 9,978 cycles
Engine: Pwa PW4056
System (JASC): 3320 · Passenger Compartment Lighting
Part: Electronic Unit
Part number: 285W00295
Condition: Odor
Location: Cabin Lights
Stage of operation: NR
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

STRONG ELECTRICAL ODOR ROWS 51 THRU 55. CREW TURNED OFF IFE, PC, AFT GALLEY POWER, TURNED OFF RECIRC FANS & FLOURESCENT LIGHTING, UNABLE TO LOCATE SOURCE. FOUND OEU AT 49HJK OVERHEATED, VERY HOT TO TOUCH AND ALL FUNCTIONS INOP. UNIT REPLACED. NO PRESENCE OF BURNING ODOR.