# SDR DXTA2025041603089

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2025
- Submitted: April 16, 2025
- Operation: Air carrier
- Aircraft: [N820QS](https://openairdocs.org/aircraft/N820QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000057
- Aircraft time: 3,573 hours, 2,081 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 99148361
- Part serial: 1082
- 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/DXTA2025041603089

## Discrepancy

EQUIPMENT COOLING: STRONG MUSTY AND DIRTY SOCK SMELL COMING THROUGH GASPERS WHILE APU IS ON. NOT AS STRONG WHEN ENGINES ARE OPERATING. CORRECTIVE ACTION: REPLACED HEPA FILTER. OPS CHECK GOOD. IAW CE700 AMM 49-00-00 AND 25-20-10

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