# SDR IPXA2017080920322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2017
- Submitted: August 9, 2017
- Operation: Air carrier
- Aircraft: [N434UP](https://openairdocs.org/aircraft/N434UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25465
- Aircraft time: 24,331 hours, 16,762 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: CR
- 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/IPXA2017080920322

## Discrepancy

CABIN ALTITUDE AUTO 2 MESSAGE DISPLAYED.  LOSS OF CABIN PRESSUE.  EMERGENCY DECLARED.  REPLACED THE NR 2 CABIN PRESSURE CONTROLLER IAW FIM 21-30-00-815-803, AND AMM 21-31-02-0401.  OPS NORMAL.

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