# SDR SB07085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2007
- Submitted: October 1, 2007
- Operation: Air carrier
- Aircraft: N589US
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23934
- Aircraft time: 59,255 hours, 36,382 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 0321309001
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CL
- 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/SB07085

## Discrepancy

FLT 1253 CLT - ORF ON DEPARTURE AIRCRAFT DID NOT PRESSURIZE.  RETURN TO CLT.  RESET PRESSURIZATION SYSTEM.  NO FURTHER FAULTS.

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