# SDR 9608999964

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N912RW
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47150
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9608999964

## Discrepancy

AIRCRAFT WOULD NOT PRESSURIZE IN AUTO MODE AFTER TAKEOFF.  OUTFLOW VALVE WORKED NORMALLY IN MANUAL POSITION.  FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED CABIN PRESSURE AMPLIFIER AND OUTFLOW VALVE ACTUATOR, OPERATIONAL CHECK NORMAL.

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