Service difficulty report · Power Supply · Boeing 747451

Difficulty date
February 23, 2011
Submitted
February 24, 2011
Operation
Air carrier
Aircraft
N669US
Make and model
Boeing 747451
Aircraft serial
24224
Aircraft time
88,594 hours, 10,876 cycles
Part
Power Supply
Condition
Inoperative
Location
Cabin
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

DURING MAINTENANCE VISIT, THE RIGHT OVERWING EMERGENCY LIGHTS NR 1 AND NR 2 POSITION WERE FOUND TO BE INOPERATIVE. MAINTENANCE REPLACED THE POWER SUPPLY FOR THE EMERGENCY LIGHT ABOVE DOOR 3L. SYSTEM OPERATION WAS NORMAL AFTER THE POWER SUPPLY WAS REPLACED.