# SDR AWXA200601031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2006
- Submitted: June 26, 2006
- Operation: Air carrier
- Aircraft: N909AW
- Make and model: Boeing 757-2G7
- Registry model: [Boeing 757-2G7](https://openairdocs.org/model/boeing-757-2g7) (OpenAirDocs)
- Aircraft serial: 24522
- Aircraft time: 62,670 hours, 23,895 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 21173886
- Part serial: 114758
- Condition: Inoperative
- Location: Cabin Pressure
- Part time: 69,351 hours, 26,925 cycles
- Stage of operation: CL
- 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/AWXA200601031

## Discrepancy

HNL - DIVERSION - FLT 931 - DURING CLIMB-OUT OF OGG EN ROUTE TO PHX, THE CREW NOTICED THAT THE CABIN WAS CLIMBING WITH THE AIRCRAFT IN AUTO 1 POSITION.  RECEIVED CABIN ALT MASTER CAUTION AND SWITCHED TO AUTO 2, THERE WAS NO CHANGE.  RECEIVED CABIN ALT 1 AND 2 STATUS MESSAGE WITH BOTH C/B/S IN.  CREW DIVERTED TO HNL AND LANDED WITHOUT FURTHER EVENT.  MAINTENANCE REMOVED AND REPLACED THE AUTO 2 CABIN PRESSURE CONTROLLER IAW MM 21-31-02-4.  THE CABIN ALT AUTO CONTROLLER (AUTO 1) FAILED BITE CHECK, FAULTING THE AC MOTOR.  REMOVED AND REPLACED BOTH A/C MOTORS ON THE OUTFLOW VALVE ACTUATOR IAW AMM 21-31-05-4.  OPERATIONAL CHECKS WERE GOOD FOR BOTH AUTO CONTROLLERS.

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