# SDR AALA20110723TUL03

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2011
- Submitted: July 25, 2011
- Operation: Air carrier
- Aircraft: [N963TW](https://openairdocs.org/aircraft/N963TW), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53613
- Aircraft time: 35,366 hours, 16,448 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 21184904
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: TO
- 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/AALA20110723TUL03

## Discrepancy

IAD - CREW REPORTED UNABLE TO PRESSURIZE CABIN.  EMERGENCY DECLARED FLIGHT RETURNED IAD LANDED WITHOUT INCIDENT.  PLACARD NUMBER 2 CABIN PRESSURE CONTROLLER PER MEL.  REPLACED NUMBER 2 PRESSURE CONTROLLER AT DFW ON 07/23/2011.  SYSTEM GROUND CHECK NORMAL OPERATION.

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