- Difficulty date
- March 21, 2026
- Submitted
- March 24, 2026
- Operation
- Air carrier
- Make and model
- Airbus A321231
- Aircraft serial
- 07520
- Aircraft time
- 33,721 hours, 10,713 cycles
- Part
- Battery
- Condition
- Inoperative
- Location
- Zone 200
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: EPSU 15WL MID L BATTERY FAILED BITE TEST; REMOVED & REPLACED 15WL EPSU BATTERY IAW A321 AMM 33-51-38 & PERFORMED EPSU SYSTEM BITETEST IAWA321 AMM 33-51-00-710-001 & CIDS 1 INTERFACE & POER UP TEST IAW A321 AMM 23-73-00-740-005-6 TESTS OK REF STS W004320 N 0383 ,