# SDR YENA201707210596

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2017
- Submitted: July 26, 2017
- Operation: Air carrier
- Aircraft: [N949JT](https://openairdocs.org/aircraft/N949JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6575
- Aircraft time: 9,096 hours, 2,985 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 44018005
- Part serial: 11524
- Condition: Failed
- Location: Cabin Air
- Part time: 2,532 hours, 842 cycles
- Stage of operation: DE
- 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/YENA201707210596

## Discrepancy

DURING DESCENT THROUGH 11,800 FT, IDLE THURST, A  STRONG DISTINCT TOXIC ODOR IN COCKPIT AND CABIN FRONT AND REAR. THE FLIGHT CREW DONNED OXYGEN MASKS.  REMOVED AND REPLACED THE NR 1 AND 2 OZONE FILTERS IAW AMM 21-51-41.

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