# SDR AALA20060920

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2006
- Submitted: November 7, 2006
- Operation: Air carrier
- Aircraft: N9621A
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53592
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 21184904
- Condition: Inoperative
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20060920

## Discrepancy

DURING CRUISE EXPERIENCED CABIN PRESSURE LOSS AND MASKS DEPLOYED.  LANDED ELP WITHOUT INCIDENT.  REPLACED AFT CABIN PRESSURE SAFETY VALVE.  SYSTEM GROUND CHECKED NORMAL OPERATION.

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