# SDR YENA2026062900495

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2026
- Submitted: June 29, 2026
- Operation: Air carrier
- Aircraft: [N4080J](https://openairdocs.org/aircraft/N4080J), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11861
- Aircraft time: 8,799 hours, 1,343 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: 636D0015511
- Part serial: 56690
- Condition: Inoperative
- Location: Zone 400
- Part time: 8,820 hours, 1,346 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2026062900495

## Discrepancy

FLT 345, BOS-BCN. (ETOPS) NR 2 ENG FIRE LOOP B INOPERATIVE.  REMOVED AND REPLACED ENG 2 (4001WD2) LOOP B PER AMM 26-12-17. OPS CHECK GOOD. MDDR CLEARED. MX4 UPDATED. MCC NOTIFED.

---
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.