# SDR DXTA2026040607491

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2026
- Submitted: April 6, 2026
- Operation: Air carrier
- Aircraft: [N513QS](https://openairdocs.org/aircraft/N513QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0046
- Aircraft time: 9,556 hours, 6,332 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 99148361
- Part serial: 1770
- Condition: Odor
- Location: Zone 100
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026040607491

## Discrepancy

REPEAT WRITEUP: DURING DESCENT, WE EXPERIENCED FUMES IN THE AIRCRAFT BEGINNING A ABOUT 25000FT. CORRECTIVE ACTION: REPLACED HEPA FILTER. OPS CHECK GOOD. IAW CE680A MM 21-70-10

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