What was found
EMERGENCY EXIT LIGHT SIGN AFT OF DOOR 4L ILLUMINATES MOMENTARILY WHEN IT SHOULD BE OFF. REPLACED POWER SUPPLY M7921. OPERATIONS CHECKED NORMAL IAW MM 33-51-04. REF CH4554.
- Difficulty date
- January 14, 2015
- Submitted
- January 16, 2015
- Operation
- Air carrier
- Aircraft
- N116UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26908
- Aircraft time
- 64,739 hours, 7,372 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Condition
- Defective
- Location
- Cabin
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.