# SDR AALA20110826DEN01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2011
- Submitted: August 30, 2011
- Operation: Air carrier
- Aircraft: [N918AN](https://openairdocs.org/aircraft/N918AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29519
- Aircraft time: 36,038 hours, 14,862 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20110826DEN01

## Discrepancy

DEN - CREW REPORTED AIRCRAFT FAILED TO PRESSURIZE.  FLIGHT RETURNED DEN LANDED WITHOUT INCIDENT.  PLACARD NUMBER 2 AUTO PRESSURE CONTROLLER INOPERATIVE.  FLIGHT CONTINUED ON TO DESTINATION.  REPLACED NUMBER 2 AUTO PRESSURE CONTROLLER AT SEA ON 08/27/2011.  SYSTEM GROUND CHECK NORMAL OPERATION.

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