What was found
(AIRCRAFT NOT GROUNDED) DURING EPSU SYSTEM TEST BAT/EPSU(10WL) FWD L FAULT. / FOLLOWING TSM 33-51-00-810-829-A, REMOVED AND REPLACED 10WL EPSU BATTERY IAW AMM 33-51-38-000-002-A AND AMM 33-51-38-400-002-A. OPS CHECK SATISFACTORY."
- Difficulty date
- August 3, 2026
- Submitted
- August 3, 2026
- Operation
- Air carrier
- Aircraft
- N278NV
- Make and model
- Airbus A320214
- Aircraft serial
- 4253
- Aircraft time
- 49,212 hours, 21,174 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Epsu
- Part number
- 321431
- Part serial
- 964844
- Condition
- No Test
- 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.