Service difficulty report · Electronic Unit · Boeing 747422

Difficulty date
April 4, 2011
Submitted
April 4, 2011
Operation
Air carrier
Aircraft
N181UA
Make and model
Boeing 747422
Aircraft serial
25278
Aircraft time
82,115 hours, 10,061 cycles
Engine
Pwa PW4056
Part
Electronic Unit
Part number
285W00295
Condition
Malfunctioned
Location
Cabin
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

LIGHT BALLAST SMELL NEAR ROW 1. ALSO SIDEWALL LIGHT AT 1A CAME ON UNCOMMANDED, WONT GO OFF. T-S FOUND TWO BALLAST (CEILING, SIDEWALL) ARE BAD AND DISCONNECTED PLUGS FROM AFFECTED BALLAST THAT LOCATED CEILING ABOVE 2A SEAT. SMELL IS GONE AND REMAINING LIGHTING IS SUFFICIENT TO PERFORM DUTIES. CONFIRMED BURNING SMELL FROM CIRCUIT CARD OEU ROW 2A. REPLACED OEU AT 2A, SECURED BALLAST CONNECTORS, LIGHTING, CHECKS OKAY.