# SDR DXTA200300019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2003
- Submitted: April 30, 2003
- Operation: Air carrier
- Aircraft: [N982QS](https://openairdocs.org/aircraft/N982QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500182
- Aircraft time: 1,054 hours, 694 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200300019

## Discrepancy

JUST AFTER STARTING A DESCENT FROM FL 410 CABIN RAPIDLY OVERPRESSURIZED .  PRESSURE WENT TO BELOW ZERO AND CABIN DPSI WAS RIGHT AT REDLINE.  DUE TO RATE AND PRESSURE, CHOSE TO CABIN DUMP.  AS A RESULT OXYGEN MASKS DEPLOYED.  OPS CHECKED PRESSURISATION SYSTEM ON GROUND WITH APU AND ENGINES, NO FAULTS FOUND.

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