# SDR DXTA2026072708983

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2026
- Submitted: July 27, 2026
- Operation: Air carrier
- Aircraft: [N816QS](https://openairdocs.org/aircraft/N816QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000051
- Aircraft time: 6,177 hours, 3,626 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Filter
- Part number: 99148361
- Part serial: 1535
- Condition: Dirty
- 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/DXTA2026072708983

## Discrepancy

NOTICED A FOUL CHEMICAL LIKE SMELL DURING PRE FLIGHT. THE SMELL SEEMED TO BE COMING FROM WEMACS AND GET WORSE THE LONGER THE APU WAS RUNNING. AFTER POWERING DOWN THE AIRPLANE, LEFT BAGGAGE AND DOOR OPEN TO AIR OUT FOR 5 MIN AND THE SMELL WAS NOT AS NOTICEABLE "CORRECTIVE ACTION" REMOVED AND REPLACED CABIN HEPA FILTER WITH A CUSTOMER SUPPLIED NEW FILTER. CLOSED ACCESS. OPS CHECK GOOD WITH NO DEFECTS NOTED. POWERED AIRCRAFT AND RAN APU FOR EXTENDED PERIOD OF TIME WITH NO ABNORMAL SMELLS NOTED. WORK COMPLETED WITH REFERENCE TO AMM 21-70-10.

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