Service difficulty report · Power Supply · Boeing 747422

Difficulty date
May 19, 2008
Submitted
May 21, 2008
Operation
Air carrier
Aircraft
N197UA
Make and model
Boeing 747422
Aircraft serial
26901
Aircraft time
43,660 hours, 5,305 cycles
Engine
Pwa PW4056
Part
Power Supply
Condition
Faulty
Location
Emergency Lights
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

FC EMERGENCY LIGHTS FLASH ON AND OFF. AFTER A HISTORY OF EXTENSIVE TROUBLE SHOOTING REPLACED POWER SUPPLY M6000 AT DOOR 1R LIGHTS TESTED OK. AC OK FOR SERVICE.