# SDR YENA2026030400252

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2026
- Submitted: March 4, 2026
- Operation: Air carrier
- Aircraft: [N913JB](https://openairdocs.org/aircraft/N913JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 05909
- Aircraft time: 43,835 hours, 13,772 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Barrier
- Condition: Faulted
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2026030400252

## Discrepancy

DURING HEAVY MAINTENANCE: 14WL BATTERY FAULT.  R & R 90WL4 EMERGENCY EXIT MARKER IAW AMM 33-51-13 ALSO REMOVED AND REPLACED 14WL EPSU IAW A321 AMM 33-51-38 EPSU OPERATIONAL CHECK DONE IAW A321 AMM 33-54-00-710-001-A 14WL NO FAULT AND WORKED GOOD OPS INTERFACE AND POWER UP TEST IAW A321 AMM 23-73-00-740-005-B DONE TEST OK ALL WORK ACCOMPLISHED ON WO W004054 NR N1079.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.