What was found
DFW - CREW REPORTED AIRCRAFT WOULD NOT PRESSURIZE ON PRIMARY SYSTEM. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED OUTFLOW VALVE ACTUATOR. SYSTEM GROUND CHECK NORMAL OPERATION.
- Difficulty date
- May 2, 2011
- Submitted
- May 5, 2011
- Operation
- Air carrier
- Aircraft
- N9304C
- Make and model
- Doug DC983
- Aircraft serial
- 49530
- Aircraft time
- 65,996 hours, 32,992 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Actuator
- Part number
- 2829001013
- Condition
- Malfunctioned
- Location
- Outflow Valve
- Stage of operation
- CL
- 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.