# SDR AALA202506023068

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2025
- Submitted: June 2, 2025
- Operation: Air carrier
- Aircraft: [N198UW](https://openairdocs.org/aircraft/N198UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5444
- Aircraft time: 39,681 hours, 16,318 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 20499006AP1
- Part serial: 10862
- Condition: Contaminated
- Location: Zone 100
- Part time: 36,277 hours, 14,192 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/AALA202506023068

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED ODOR/FUMES FROM PREVIOUS WRITE UP RETURNED DURING FINAL DESCENT OUT OF ABOUT 12,000 FT. MAINTENANCE REPLACED THE LEFT HAND OZONE FILTER PER AMM 21-51-41 AND ACCOMPLISHED A DECONTAMINATION OF THE PACKS PER TASK CARD 26L00021013.

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