# SDR AALA20120129LAX01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2012
- Submitted: February 2, 2012
- Operation: Air carrier
- Aircraft: N9406W
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53126
- Aircraft time: 55,247 hours, 26,436 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Actuator
- Part number: 20219742
- Condition: Inoperative
- 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/AALA20120129LAX01

## Discrepancy

LAX - CREW REPORTED AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKE OFF.  NUMBER 2 CABIN PRESSURE CONTROLLER CURRENTLY ON PLACARD.  FLIGHT RETURNED LAX LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED CABIN PRESSURE OUTFLOW VALVE ACTUATOR.  SYSTEM GROUND CHECK NORMAL OPERATION.

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