# SDR AALA2009052600001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2009
- Submitted: July 8, 2009
- Operation: Air carrier
- Aircraft: [N7549A](https://openairdocs.org/aircraft/N7549A), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 53031
- Aircraft time: 53,857 hours, 27,485 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Inoperative
- 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/AALA2009052600001

## Discrepancy

DFW - NEITHER PRESSURIZATION SYSTEM WOULD MAINTAIN PRESSURE DURING CLIMBOUT.  RETURNED DFW WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED THE OUTFLOW VALVE ACTUATOR.  SYSTEM GROUND CHECK NORMAL OPERATION.

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