# SDR AALA20090715MCO02

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2009
- Submitted: July 22, 2009
- Operation: Air carrier
- Aircraft: N589AA
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53252
- Aircraft time: 57,326 hours, 24,035 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Actuator
- Part number: 20219742
- Condition: Malfunctioned
- Location: Outflow Valve
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20090715MCO02

## Discrepancy

AFTER TAKEOFF AIRCRAFT WOULD NOT PRESSURIZE.  REPEAT.  RETURNED TO MCO AND LANDED WITHOUT INCIDENT.  FOUND OUTFLOW VALVE ACTUATOR MALFUNCTIONED.  REPLACED CABIN PRESSURE OUTFLOW VALVE.

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