What was found
EMERGENCY LIGHTING EPSU FAILED BITE TEST PER TASK CARD 18-3351-1-0003. FAULT CODE 10WL DISPLAYED AS A RESULT OF THE TEST. INSTALLED SERVICABLE EPSU BATTERY P/N 3214-31 REF AMM 33-51-38-400-002-A. OPS CHECK NORMAL.
- Difficulty date
- June 27, 2026
- Submitted
- June 29, 2026
- Operation
- Air carrier
- Aircraft
- N14527
- Make and model
- Airbus A321271NX
- Aircraft serial
- 12056
- Aircraft time
- 4,655 hours, 1,746 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- 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.