# SDR GLBA2012052201

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2012
- Submitted: May 22, 2012
- Operation: Air carrier
- Aircraft: [N100UX](https://openairdocs.org/aircraft/N100UX), registered now
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE100
- Aircraft time: 39,496 hours, 46,545 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Diaphragm
- Condition: Damaged
- Location: Outflow Valve
- Part time: 22,023 hours, 25,984 cycles
- Component: Outflow Valve
- Component part number: 1036464
- Stage of operation: CL
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GLBA2012052201

## Discrepancy

PILOT REPORTED THAT DURING CLIMB OUT AND PASSING THROUGH 21,500" CABIN HIGH ANNC ILLUMINATED, DECLARED EMERGENCY, MASKS DEPLOYED, RETURNED TO DEPARTURE.  MX R & R LT OUTFLOW VALUE DUE TO DAMAGE TO THE DIAPHRAM IAW BMM 21-30-01, OPS CHECKED GOOD IAW BMM 21-30-00.

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