# SDR K11A2018102900002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2018
- Submitted: October 29, 2018
- Operation: Air carrier
- Aircraft: [N730CK](https://openairdocs.org/aircraft/N730CK), registered now
- Make and model: Boeing 737-4C9
- Registry model: [Boeing 737-4C9](https://openairdocs.org/model/boeing-737-4c9) (OpenAirDocs)
- Aircraft serial: 26437
- Aircraft time: 58,406 hours, 29,757 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Panel
- Part number: 7110075
- Part serial: FIC44286
- Condition: Faulty
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/K11A2018102900002

## Discrepancy

ON DEPATURE AIRCRAFT WOULD NOT PRESSURIZE, CABIN WOULD NOT HOLD PRESSURE IN AUTO OR MANUAL MODES, RETURNED TO KPHX FOR UNSCHEDULED LANDING.

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