# SDR AALA20110519LAX01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2011
- Submitted: May 20, 2011
- Operation: Air carrier
- Aircraft: [N692AA](https://openairdocs.org/aircraft/N692AA), registered now
- Make and model: Boeing 757223
- Aircraft serial: 26972
- Aircraft time: 62,561 hours, 17,696 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: G, B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20110519LAX01

## Discrepancy

LAX - CREW REPORTED WHILE AT CRUISE A PRESSURIZATION WARNING AND UNCOMMANDED DEPRESSURIZATION.  EMERGENCY DESCENT TO 10000 FT AND O2 MASKS WERE DEPLOYED MANUALLY.  EMERGENCY DECLARED FLIGHT RETURNED LAX LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED NUMBER 1 CABIN PRESSURE CONTROLLER.  SYSTEM GROUND CHECK NORMAL OPERATION.

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