Service difficulty report · Power Supply · Boeing 747422

Difficulty date
March 13, 2004
Submitted
March 23, 2004
Operation
Air carrier
Aircraft
N173UA
Make and model
Boeing 747422
Aircraft serial
24380
Aircraft time
53,779 hours, 6,075 cycles
Engine
Pwa PW4056
Part
Power Supply
Condition
Inoperative
Location
Emergency Light
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

EMERGENCY LIGHTS AT SEATS 32, 33, 34 A, B & C COME ON AND OFF INTERMITTENTLY WHILE AT THE GATE. REPLACED POWER SUPPLY UNIT ABOVE 3L.