# SDR DL75E090816

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2009
- Submitted: May 8, 2009
- Operation: Air carrier
- Aircraft: [N723TW](https://openairdocs.org/aircraft/N723TW), registered now
- Make and model: Boeing 757231
- Aircraft serial: 29378
- Aircraft time: 26,719 hours, 9,346 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Selector
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL75E090816

## Discrepancy

ON CLIMB-OUT OF SEA TO OGG, AUTO PRESSURIZATION 1 AND 2 FAILED.  ALSO LOST AUTOTHROTTLES.  REMOVED AND REPLACED CABIN PRESSURE SELECTOR PER AMM.  BITE 1 AND 2 CONTROLLER FAULTS CLEARED.  VALVE CHECKS OK IN MANUAL, OK FOR SERVICE.

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