# SDR DXTA2025021102281

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2025
- Submitted: February 11, 2025
- Operation: Air carrier
- Aircraft: [N831QS](https://openairdocs.org/aircraft/N831QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000075
- Aircraft time: 2,330 hours, 1,380 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Filter
- Part number: 99148361
- Part serial: 1141
- Condition: Defective
- Location: Cabin
- 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/DXTA2025021102281

## Discrepancy

SMELLS IN CABIN/COCKPIT: BOTH THE CABIN AND THE COCKPIT HAVE A MUSTY SMELL ANYTIME THE APU OR ENGINES ARE RUNNING. CORRECTIVE ACTION: REPLACED HEPA FILTER. OPS CHECK GOOD. IAW CE-700 AMM 21-70-10.

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