What was found
EMERGENCY LIGHTS AT 4 LEFT AND RIGHT ARE ON WHEN SWITCH IS ARMED. *S/D* PROBLEM WAS RESOLVED WHEN THE BATTERY PACK WAS REPLACED. PROBABLE CAUSE WAS DEGRADATION OF THE NICAD BATTERIES.
- Difficulty date
- February 18, 1998
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N4732U
- Make and model
- Boeing 747122
- Aircraft serial
- 19927
- Engine
- Pwa JT9D7A
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Condition
- Discharged
- Location
- Cabin
- Stage of operation
- NR
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.