# SDR K11A2022042700125

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2022
- Submitted: April 27, 2022
- Operation: Air carrier
- Aircraft: [N311GT](https://openairdocs.org/aircraft/N311GT), registered now
- Make and model: Boeing 737-4K5
- Registry model: [Boeing 737-4K5](https://openairdocs.org/model/boeing-737-4k5) (OpenAirDocs)
- Aircraft serial: 26316
- Aircraft time: 62,694 hours, 37,158 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 7638101
- Part serial: 79016194
- Condition: Defective
- Location: Zone 100
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/K11A2022042700125

## Discrepancy

AIRCRAFT WOULD NOT PRESSURIZE IN FLIGHT.  CORRECTIVE ACTION & OTHER PERTINENT INFORMATION: R AND R THE PRESSURIZATION CONTROLLER IAW B737 AMM 21-31-31 & 21-31-00, OPS CHECK GOOD. NO DEFECTS NOTED

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