Service difficulty report · Ballast · Boeing 747422

Difficulty date
November 27, 2012
Submitted
January 28, 2013
Operation
Air carrier
Aircraft
N179UA
Make and model
Boeing 747422
Aircraft serial
25158
Aircraft time
90,253 hours, 10,861 cycles
Engine
Pwa PW4056
Part
Ballast
Part number
81841
Condition
Defective
Location
Cabin
Stage of operation
IN
How discovered
V
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

ON CM CHECK FOUND SEAT 17JK SIDEWALL WASH LIGHT REAR LAMP HOLDER BURNT OFF. TUBE REMOVED. NO SPARE SOCKET IAW MM. BALLAST SUPPLY PWR PLUG DISCONNECTED AND PROTECTED, NO PWR TO BALLAST AND TUBES, TWO TUBES INVOLVED. REPLACED LAMP HOLDER. REINSTALLED LAMP, NO HELP. REPLACED BALLAST PER MM, OPS CHECK NORMAL.