# SDR DXTA2026032307348

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2026
- Submitted: March 23, 2026
- Operation: Air carrier
- Aircraft: [N681QS](https://openairdocs.org/aircraft/N681QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0214
- Aircraft time: 6,930 hours, 4,569 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Filter
- Part number: 99148361
- Part serial: 1003
- Condition: Odor
- Location: Zone 100
- Stage of operation: TX
- 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/DXTA2026032307348

## Discrepancy

DURING STARTUP TAXI AND CRUISE FLIGHT, STRONG PRESENCE OF JET EXHAUST THROUGH THE CABIN AND COCKPIT. MORE PRESENT WHEN THE LEFT ENGINE WAS STARTED.  REPLACED HEPA FILTER. OPS CHECK GOOD. IAW CE680A AMM 21-60-00

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