# SDR DALA14015480666

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2014
- Submitted: March 10, 2014
- Operation: Air carrier
- Aircraft: [N666DN](https://openairdocs.org/aircraft/N666DN), registered now
- Make and model: Boeing 757232
- Aircraft serial: 25034
- Aircraft time: 74,976 hours, 34,375 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Faulted
- Location: Cabin Pressure
- 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/DALA14015480666

## Discrepancy

DUE TO CABIN ALTITUDE, AUTO 1 AND CABIN ALTITUDE AUTO 2 EICAS MESSAGES WITH NO CONTROL OF CABIN PRESSURE IN EITHER MODE.  BITE CHECK OF CONTROLLERS FOUND CONTROLLER FAULT ON EACH ONE.  REPLACED BOTH CABIN PRESSURE AUTO CONTROLLERS IAW AMM 21-31 AND CHECKED OK.

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