# SDR YENA2025101401031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2025
- Submitted: October 14, 2025
- 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: 6,031 hours, 910 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: 9090120201
- Part serial: A0067855
- Condition: Faulted
- Location: Nr 1
- Part time: 6,087 hours, 918 cycles
- Stage of operation: CL
- 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/YENA2025101401031

## Discrepancy

FLT#2260, MAD-BOS. (ETOPS) "ENG 1 FIRE LOOP A FAULT DURING PREFLIGHT ( ENGINE FIRE DETECTION SYSTEMS 1) LOOP A ); T/S PER TSM 26-12-00-810-803-A NO DEFECTS FOUND. FAUTL HAS NOT HIT IN FLIGHT PER PREVIOUS EGS + AVIATAR. AS PRECAUTIONARY REMOVED AND REPLACED FDU # 1 IAW AMM 26-12-34 OPS TEST GOOD MDDR CLEARED PALCARD REMOVED UPDATED MX-4.

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