# SDR L7OA20130109001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2013
- Submitted: January 14, 2013
- Operation: Air carrier
- Aircraft: [N999YB](https://openairdocs.org/aircraft/N999YB), registered now
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK98
- Aircraft time: 5,857 hours, 4,665 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Pressure Valve
- Part number: 45AS63019009
- Part serial: 0174
- Condition: Defective
- Location: Cabin Pressure
- Part time: 481 hours, 377 cycles
- 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/L7OA20130109001

## Discrepancy

PILOT STATED NOTICED CABIN AT 10,000 FT AND CLIMBING. DONNED MASKS AND STARTED AN EMERGENCY DESCENT.  CABIN CONTINUED TO CLIMB AT ABOUT 2,200 FPM AND RECEIVED A CABIN ALTITUDE ANNUNCIATOR AND THEN THE PAX MASKS DROPPED AUTOMATICALLY AROUND 14,000 CABIN ALTITUDE.  CABIN ULTIMATELY REACHED 15,000 FT AND HELD THERE.

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