# SDR MRKA9536

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N686MA](https://openairdocs.org/aircraft/N686MA), registered now
- Make and model: Boeing 737-4S3
- Registry model: [Boeing 737-4S3](https://openairdocs.org/model/boeing-737-4s3) (OpenAirDocs)
- Aircraft serial: 24795
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 7638101
- Condition: Inop
- Location: Cabin
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MRKA9536

## Discrepancy

AIR RETURN DUE AIRCRAFT WOULD NOT PRESSURIZE ON CLIMB-OUT FROM DEN.  REMOVED AND REPLACED PRESSURE CONTROLLER AND OPERATIONAL CHECKED PER MM 21-31-00.  (W)

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