# SDR YENA2026051500456

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2026
- Submitted: May 15, 2026
- Operation: Air carrier
- Aircraft: [N4022J](https://openairdocs.org/aircraft/N4022J), 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: 10303
- Aircraft time: 18,141 hours, 2,698 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Detector
- Part number: 636D0015509
- Part serial: 59864
- Condition: Illuminated
- Location: Loop B
- Part time: 3,028 hours, 590 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/YENA2026051500456

## Discrepancy

FLT 32, AMS-BOS. (ETOPS) ENG L FIRE LOOP B FAULT ECAM AFTER LANDING.  ENGINE FIRE DETECTION SYSTEMS LOOP B.  FAULT HAS NOT SHOWED IN 3 DAYS PER MCC AC OK FOR SVC REF LP 4398668 ITEM 1 (FOUND PYLON RAIL ASSY BROKEN. R & R PYLON FIRE DETECTOR RAIL  ASSY IAW AMM 26-12-16.  REPLACED PYLON LOOP A (3W01) & LOOP B (4W01), OPS CHKD GOOD.   ENG PYLON LOOP A & B REPLACEMENT.  ACFT ETOPS GROUND VERIFICATION PERFORMED IAW AMM 26-12-16.

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