What was found
NR 1 EPSU BITE TEST FAILED 12WL BATTERY. AC WAS NOT GROUNDED FOR THIS EVENT IT WAS SCHEDULED MX. REMOVED AND REPLACED EPSU BATTERY AT 12WL REF AMM 33-51-38-400-002-A. AC OK FOR SERVICE.
- Difficulty date
- June 8, 2026
- Submitted
- June 8, 2026
- Operation
- Air carrier
- Aircraft
- N389FR
- Make and model
- Airbus A320251N
- Aircraft serial
- 10743
- Aircraft time
- 13,283 hours, 6,358 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- 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.