# SDR G41A2007001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2007
- Submitted: May 1, 2007
- Operation: Air carrier
- Aircraft: [N43MF](https://openairdocs.org/aircraft/N43MF), registered now
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 284
- Aircraft time: 11,274 hours, 10,587 cycles
- Engine: Garrtt TFE73122B
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin Press Sys
- 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/G41A2007001

## Discrepancy

FLYING AT 450 FROM MMUN TO ABQ THE CABIN ALTITUDE STARTED CLIMBING AND COULD NOT BE STOPPED, THE CREW STARTED A DESCENT TO 270 AND LANDED IN ELP.  A FUNCTIONAL TEST OF THE PRESSURIZATION SYSTEM AND A CABIN LEAK RATE CHECK WERE COMPLETED.  THE PROBLEM COULD NOT BE DUPLICATED ON THE GROUND.

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