What was found
EMERG EXIT LTS INTERMITTENT ON UD STAIRWELL FLT DCK SW CONFIRMED IN ARMED POS NOT ON. REPLACED EMERGENCY LIGHT POWER SUPPLY BATTERY M5939. OPERATIONAL TEST OK PER MM.
- Difficulty date
- March 17, 2012
- Submitted
- April 6, 2012
- Operation
- Air carrier
- Aircraft
- N128UA
- Make and model
- Boeing 747422
- Aircraft serial
- 30023
- Aircraft time
- 48,167 hours, 5,700 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 582240
- Condition
- Discharged
- 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.