# SDR DALA2026070203883

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 1, 2026
- Submitted: July 2, 2026
- Operation: Air carrier
- Aircraft: [N304DN](https://openairdocs.org/aircraft/N304DN), registered now
- Make and model: Airbus A321-213
- Registry model: [Airbus A321-213](https://openairdocs.org/model/airbus-a321-213) (OpenAirDocs)
- Aircraft serial: 7112
- Aircraft time: 29,588 hours, 14,335 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026070203883

## Discrepancy

UPON ENTERING JET ENTIRE CREW NOTICED A MUSTY ODOR BETTER W/PACKS OFF BUT STRONG ODOR LINGERED.  REPLACED APU IN WORKPACKAGE FORECAST 31-4910-9-0010. (LP 9075450 - AIRCRAFT WAS GROUNDED)

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