# SDR GLBA2001146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2001
- Submitted: July 17, 2001
- Operation: Air carrier
- Aircraft: [N251GL](https://openairdocs.org/aircraft/N251GL), registered now
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE251
- Aircraft time: 10,990 hours, 14,785 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: 129380000113
- Part serial: GWD25632M
- Condition: Erratic
- Stage of operation: CL
- How discovered: L
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GLBA2001146

## Discrepancy

CABIN ALTITUDE HI ILLUMINATED PRESSURIZATION WOULD NOT HOLD MORE THAN 3.O, REPLACED LEFT & RIGHT BYPASS VALVES,TEMP SENSORS, THRU VALVES OPS CHECKED SYSTEM SATISFACTORY

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