What was found
PROCEDURE - CABIN EMERG LIGHT TEST, EPSU TEST FAILED. MESSAGE "EPSU (10WL) FWD L". SEE PHOTO. REPLACED BATTERY OF THE EPSU PER AMM 33-51-38-000-002-A/400-002-A. EPSU BITE TEST PASS. PARTS USED: 18-3351-3-0001, QTY :1
- Difficulty date
- March 31, 2026
- Submitted
- April 1, 2026
- Operation
- Air carrier
- Aircraft
- N14507
- Make and model
- Airbus A321271NX
- Aircraft serial
- 11846
- Aircraft time
- 5,990 hours, 2,180 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.