What was found
LEFT WING EXTERIOR OVERWING EMERGENCY EXIT LIGHTS INOP, MOST FWD TWO LIGHT ASSY'S. FOUND FAULTY POWER SUPPLY. REPLACED POWER SUPPLY OVERWING LIGHTS OPS. CK. NORMAL. AC OK FOR SERVICE.
- Difficulty date
- April 22, 2008
- Submitted
- April 23, 2008
- Operation
- Air carrier
- Aircraft
- N120UA
- Make and model
- Boeing 747422
- Aircraft serial
- 29166
- Aircraft time
- 37,387 hours, 4,510 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 90085
- Condition
- Inoperative
- Location
- Emergency Lights
- 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.