# SDR COZA20160608078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2016
- Submitted: June 8, 2016
- Operation: Air carrier
- Aircraft: [N737KA](https://openairdocs.org/aircraft/N737KA), registered now
- Make and model: Boeing 737-7BX
- Registry model: [Boeing 737-7BX](https://openairdocs.org/model/boeing-737-7bx) (OpenAirDocs)
- Aircraft serial: 30740
- Aircraft time: 29,036 hours, 17,061 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 71211997101AC
- Part serial: 9812032
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COZA20160608078

## Discrepancy

AMBER, AUTO FAIL, ANNUNCIATOR ON THE PRESSURIZATION PANEL ILLUMINATED IN THE COCKPIT.  BITE CHECKS WERE PERFORMED ON THE PRESSURE CONTROLLERS.  1 CONTROLLER SHOWED A MESSAGE FOR AN INTERNAL FAULT.  CONTROLLER WAS REPLACED AND OPS CHECK NORMAL.

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