# SDR AALA20090922DFW02

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2009
- Submitted: September 30, 2009
- Operation: Air carrier
- Aircraft: [N290AA](https://openairdocs.org/aircraft/N290AA), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49302
- Aircraft time: 70,790 hours, 37,649 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Regulator Valve
- Part number: 39271411
- Condition: Failed
- Location: Lt Pack
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20090922DFW02

## Discrepancy

DURING CLIMB CREW NOTICED A STRONG SMELL LIKE SOMETHING BURNING THROUGH OUT THE CABIN.  RETURNED TO DFW AND LANDED WITHOUT INCIDENT.  REPLACED THE PRESSURE REGULATOR VALVE ON LEFT PACK.  SYSTEM CHECKED NORMAL OPERATION.

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