What was found
AIRCRAFT NOT GROUNDED: MAINTENANCE REPORTS DURING OPS TEST OF EMERGENCY LIGHTS MSG BAT/EPSU (13WL) CAME ON. REMOVED AND REPLACED EPSU 13WL BATTERY IAW AMM 33-51-38. OPS CHECK GOOD.
- Difficulty date
- November 18, 2019
- Submitted
- November 19, 2019
- Operation
- Air carrier
- Aircraft
- N165NN
- Make and model
- Airbus A321231
- Aircraft serial
- 6956
- Aircraft time
- 11,168 hours, 4,253 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Part serial
- 796852
- 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.