# SDR 98ZZZM624

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N300NE](https://openairdocs.org/aircraft/N300NE), registered now
- Make and model: Boeing 727-25
- Registry model: [Boeing 727-25](https://openairdocs.org/model/boeing-727-25) (OpenAirDocs)
- Aircraft serial: 18974
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 1310461
- Condition: Failed
- Location: Lt Pack
- Stage of operation: TO
- Nature of condition: O
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZM624

## Discrepancy

AFTER TAKEOFF FROM BDL, AIRCRAFT WOULD NOT PRESSURIZE, RETURNED TO BDL GENERATED FROM PILOT REPORT.  REMOVED AND REPLACED LEFT PACK VALVE.  REMOVED AND REPLACED OUTFLOW CONTROL VALVE, AND FLOW CONTROL MODULATING VALVE.  OPS CHECK NORMAL PER 21-30-00.  (M)

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