Service difficulty report · Power Supply · Boeing 747422

Difficulty date
July 2, 2008
Submitted
July 17, 2008
Operation
Air carrier
Aircraft
N174UA
Make and model
Boeing 747422
Aircraft serial
24381
Aircraft time
71,903 hours, 8,082 cycles
Engine
Pwa PW4056
Part
Power Supply
Part number
582240
Condition
Inoperative
Location
Emergency Light
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

RIGHT EXTERIOR OVERWING EMERGENCY EXIT LIGHTS INOP, TWO MOST AFT LIGHT ASSY'S. FOUND FAULTY POWER SUPPLY. REPLACED POWER SUPPLY, OP CHECKED GOOD. AC OK FOR SERVICE.