# SDR AALA960773

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N553AA](https://openairdocs.org/aircraft/N553AA), 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: 53083
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Vlv Act
- Part number: 20219742
- Condition: Defective
- Location: Cabin
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: B, G, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA960773

## Discrepancy

PHX - FLT 1172 - AFTER TAKEOFF PHX DURING CLIMB-OUT, UNABLE TO PRESSURIZE A/C IN EITHER AUTO OR MANUAL MODE.  ACCOMP EMERGENCY DESCENT AND ALL PAX OXYGEN MASKS SUCCESSFULLY DEPLOYED.  A/C RETURNED TO PHX AND LANDED W/O INCIDENT.  REPLACED NR 1 PRESSURIZATION CONTROLLER AND GROUND CONTROL RELAYS R2-4 AND R2-106.  SYSTEM GROUND CHECKED NORMAL OPERATION.  A/C MAINTENANCE FERRY PHX/TUL.  RESTOWED ALL PAX OXYGEN MASKS AND SERVICED PAX OXYGEN SYS.  ACCOMPLISHED FUNCTIONAL CHECK FLIGHT AND PRESSURIZATION PROBLEM REPEATED.  REPLACED OUTFLOW VALVE ACTUATOR.  SYSTEM GROUND CHECKED NORMAL OPS.  ACCOMP FUNCTIONAL CHECK/FERRY FLIGHT WITH NO DEFECTS FOUND.  SYS OPS CHECKED NORMAL.  (M)

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