# SDR AALA20120731008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2012
- Submitted: August 3, 2012
- Operation: Air carrier
- Aircraft: [N598AA](https://openairdocs.org/aircraft/N598AA), 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: 53288
- Aircraft time: 63,458 hours, 26,998 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: 39271411
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20120731008

## Discrepancy

PHL - CREW REPORTED SMOKE IN THE CABIN.  EMERGENCY DECLARED FLIGHT LANDED PHL WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED LEFT AND RIGHT PRESSURE REGULATING AND SHUT-OFF VALVES.  SYSTEM GROUND CHECK NORMAL OPERATION.

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