# SDR 96ZZZM321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N917VV
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47323
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Control Wheel
- Condition: Stuck Open
- Location: Outflow Vlv
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZM321

## Discrepancy

ON FLT NR 363 - BOS-RDU, CAPTAIN COULD NOT PRESSURIZE THE CABIN IN MANUAL OR AUTO.  MAINTENANCE FOUND THE OUTFLOW VALVE CONTROL WHEEL STUCK IN FULL OPEN POSITION.  MAINTENANCE FREED WHEEL AND OPS CHECKED OK.  (M)

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