# SDR ZLWA0603

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2006
- Submitted: December 8, 2006
- Operation: Air carrier
- Aircraft: [N77HF](https://openairdocs.org/aircraft/N77HF), registered now
- Make and model: Cessna 650
- Registry model: [Cessna 650](https://openairdocs.org/model/cessna-650) (OpenAirDocs)
- Aircraft serial: 7036
- Aircraft time: 4,083 hours, 3,070 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Condition: Uncontrollable
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ZLWA0603

## Discrepancy

CABIN DEPRESSURIZED AT 20,000 FEET, 8500 FT LIGHT ILLUMINATED AND MADE AN EMERGENCY DESCENT.  MAINTENANCE INSPECTED SYSTEM COMPONENTS WITH NO DEFECTS NOTED.  UNABLE TO DUPLICATE DISCREPANCY.

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