# SDR QXEA200701906

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2007
- Submitted: December 19, 2007
- Operation: Air carrier
- Aircraft: N418QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4143
- Aircraft time: 2,455 hours, 2,389 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 88060B010002
- Part serial: 00286
- Condition: Malfunctioned
- Location: Cabin Pressure
- Part time: 2,455 hours, 2,389 cycles
- 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/QXEA200701906

## Discrepancy

GEG - FLIGHT 2371 - CLIMBING OUT OF 8000 FEET, PRESSURIZATION WAS RAPIDLY INCREASING, AND 12000 GOT A MASTER WARNING.  AIRCRAFT WOULD NOT DEPRESSURIZE IN MANUAL MODE, DESCENDING OUT OF 10000 MANUAL MODE STARTED TO OPERATE.  RETURNED TO THE FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING.  MAINTENANCE REPLACED THE AFT OUTFLOW VALVE.  OPERATIONAL CHECKS GOOD.  AIRCRAFT RETURNED TO SERVICE.

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