# SDR DALA2026090304987

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2026
- Submitted: September 3, 2026
- Operation: Air carrier
- Aircraft: [N550DN](https://openairdocs.org/aircraft/N550DN), 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: 11734
- Aircraft time: 11,647 hours, 2,838 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Reheater
- Condition: Faulted
- Location: Zone 100
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026090304987

## Discrepancy

FLIGHT ATTENDENTS REPORTED FUMES ON DESENT BETWEEN 15-13K: BOTH FORWARD & AFT.   REPLACED NR 2 RE-HEATER IAW AMM 21-52 AND NR 2 OZONE FILTER IAW AMM 21-51. (LP 7698984, 1786729 - AIRCRAFT WAS GROUNDED).

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