What was found
CIDS1 EPSU SYS TEST FAILED. CLASS 1, BAT/EPSU(16WL) OWD R. REMOVED AND REPLACED 16WL EPSU BATTERY REF AMM 33-51-38-000-002-A AND 33-51-38-400-002-A. OPS TESTS GOOD. FAULT NO LONGER PRESENT.
- Difficulty date
- February 4, 2026
- Submitted
- February 5, 2026
- Operation
- Air carrier
- Aircraft
- N44501
- Make and model
- Airbus A321271NX
- Aircraft serial
- 11500
- Aircraft time
- 6,080 hours, 2,195 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- 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.