What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY 13WL UNIT FAILED TEST PER PERIODIC CHECK EMERGENCY LIGHT TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY PER AMM 33-51-38. OPS TEST GOOD OK FOR SERVICE.
- Difficulty date
- October 1, 2026
- Submitted
- October 1, 2026
- Operation
- Air carrier
- Aircraft
- N127UW
- Make and model
- Airbus A320214
- Aircraft serial
- 4202
- Aircraft time
- 44,684 hours, 25,076 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- Failed
- Location
- Zone 200
- 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.