# SDR DXTA2026101910256

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2026
- Submitted: October 19, 2026
- Operation: Air carrier
- Aircraft: [N901QS](https://openairdocs.org/aircraft/N901QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0307
- Aircraft time: 9,135 hours, 6,128 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 9G1224A4M03
- Condition: Failed
- Location: Cabin
- Stage of operation: CL
- 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/DXTA2026101910256

## Discrepancy

CLIMBING THROUGH FL300 WE HEARD AN OSCILLATING/BUZZING SOUND COMING FROM BEHIND THE GLARESHIELD LEFT SIDE. SHORTLY BEFORE LANDING, THERE WAS AN ASSOCIATED UNUSUAL SMELL. THIS MATCHES WITH A PREVIOUS WRITE UP.  REMOVED LEFT GLARESHIELD COOLING FAN (MC001) FOR OSCILLATING/BUZZING, INSTALLED A NEW UNIT IAW MM 21-25-05, OPS CHKD GOOD.

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