Service difficulty report · Power Supply · Boeing 747422

Difficulty date
September 13, 2008
Submitted
September 22, 2008
Operation
Air carrier
Aircraft
N119UA
Make and model
Boeing 747422
Aircraft serial
28812
Aircraft time
39,854 hours, 4,749 cycles
Engine
Pwa PW4056
Part
Power Supply
Part number
20131A
Condition
Intermittent
Location
Emergency Light
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

UPPER DECK EMERGENCY CABIN LIGHTS FLASHING IN FLIGHT. FOUND FAULTY POWER PACK. REPLACED POWER PACK. POSITIONED EMERGENCY LIGHT SWITCH IN ARMED POSITION. OPS NORMAL.