What was found
DURING HEAVY MAINTENANCE, DURING OPS CHECKS OF EPSU 11WL BATTERY FAULT. R & R BATTERY EPSU 11WL IAW AMM 33-51-38-000-002-A OPS TESTS OK.
- Difficulty date
- April 13, 2021
- Submitted
- April 27, 2021
- Operation
- Air carrier
- Aircraft
- N971JT
- Make and model
- Airbus A321231
- Aircraft serial
- 7390
- Aircraft time
- 15,392 hours, 5,085 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Part serial
- 803285
- Condition
- Failed
- Location
- Emergency Lights
- Part time
- 2,194 hours, 808 cycles
- 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.