# SDR 07FDEA01348

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2007
- Submitted: April 5, 2007
- Operation: Air carrier
- Aircraft: N449FE
- Make and model: Airbus A310-222
- Registry model: [Airbus A310-222](https://openairdocs.org/model/airbus-industrie-a310-222) (OpenAirDocs)
- Aircraft serial: 217
- Aircraft time: 38,684 hours, 27,789 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunctioned
- Location: Cabin Press Sys
- 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/07FDEA01348

## Discrepancy

NR 2 AUTO PRESSURIZATION SYSTEM FWD AND AFT VALVES  WOULD NOT CLOSE.  NR 1 SYSTEM COULD NOT CONTROL AIRCRAFT PRESSURE.  ATTEMPTED TO CONTROL  PRESSURIZATION MANUALLY.  STILL COULD NOT CONTROL PRESSURIZATION WITH THE NR 2 FWD AND AFT VALVES IN THE OPEN POSITION ITEM CLOSED WITH OPS CK OK.  REMOVED AND REPLACED FWD AND AFT OUTFLOW VALVES AND SYS 2 CONTROLLER, PRESSURIZED A/C AND CHECKED OPERATION.

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