# SDR C2XA09TY275

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2009
- Submitted: December 28, 2009
- Operation: Air carrier
- Aircraft: [N25134](https://openairdocs.org/aircraft/N25134), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 145714
- Aircraft time: 19,256 hours, 10,300 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2097K02110
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/C2XA09TY275

## Discrepancy

PRESSURE FLUCTUATING BETWEEN 8000-8300 AT 37000 FT.  FLIGHT DIVERTED.  AUTO AND MANUAL PRESSURIZATION INOP COULD NOT RECOVER CONTROL W/ THE MANUAL SYSTEM PER CHECK LIST.  REMOVED AND REPLACED PNEUMATIC AND ELECTRO PNEUMATIC OUTFLOW VALVES IAW 21-31-03 AND 21-31-04.  COMPLIED WITH OPS CHECK IAW 21-31-00, OPS CHECK GOOD.  PERFORMED TEST FLIGHT AT FL 37 NO DISCREPANCIES NOTED.  AIRCRAFT RELEASED AND RETURNED TO SERVICE.

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