# SDR 7SJA20180108001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2018
- Submitted: January 9, 2018
- Operation: Air carrier
- Aircraft: [N818WB](https://openairdocs.org/aircraft/N818WB), registered now
- Make and model: Israel ASTRA SPX
- Registry model: [Israel ASTRA SPX](https://openairdocs.org/model/israel-aircraft-industries-astra-spx) (OpenAirDocs)
- Aircraft serial: 1125091
- Aircraft time: 7,363 hours, 5,032 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Condition: Malfunctioned
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/7SJA20180108001

## Discrepancy

DURING CRUISE AT FL410,  THE CABIN PRESSURE BEGAN CLIMBING OVER 2000 FPM.   RAPIDLY RISING TO FL270.  EXECUTED AN EMERGENCY DESCENT AND LEVELED OFF AT 17,000 FT AND RETURNED TO DEPARTURE.

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