# SDR USAA2014050800006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2014
- Submitted: May 8, 2014
- Operation: Air carrier
- Aircraft: [N673AW](https://openairdocs.org/aircraft/N673AW), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2312
- Aircraft time: 35,311 hours, 12,556 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Open
- Location: Cabni Pressure
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2014050800006

## Discrepancy

ON FINAL APPROACH AT ABOUT 5000 MSL, ALT 29.65, THE OUTFLOW VLV OPENED & CABIN DEPRESSURIZED.  NOTE, AT FLT 215 THE STD FOR THE ALTIMETERS STARTED TO FLASH.  RESET CPC SYS CB`S, PERFORMED CPC 1 & 2 BITE TEST, CHECKED GOOD.  IAW TSM 21-31-00-810-810A LOW DIFFERENTIAL PRESS.  NOTE, NO HISTORY IN SCEPTRE PAST 90 DAYS.

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