What was found
EN ROUTE DTW TO CLT AT FL310 UNCOMMANDED CABIN ALTITUDE CLIMB TO 9100'. MAINTENANCE DETERMINED PNEUMATIC OUTFLOW VALVE/FILTER ASSY CONTAMINATED. VALVE AND FILTERS CLEANED, FUNCTION RESTORED.
- Difficulty date
- February 11, 2008
- Submitted
- March 6, 2008
- Operation
- Air carrier
- Aircraft
- N407FJ
- Make and model
- Dorner DO328300
- Aircraft serial
- 3157
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Condition
- Dirty
- Location
- Cabin Pressure
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.