What was found
EN ROUTE TO SEA FLT 748, AUTO CABIN PRESSURE CONTROL MALFUNCTIONED, WITH CREW PERFORMING EMERGENCY DESCENT FROM 28,000 FEET ALTITUDE TO 10,000. REPLACED OUTFLOW VALVE MOTOR/ACTUATOR ASSEMBLY. SYSTEM THEM OP CHECK OK. (M)
- Difficulty date
- March 20, 2002
- Submitted
- April 24, 2002
- Operation
- Air carrier
- Aircraft
- N976AS
- Make and model
- Doug DC983
- Aircraft serial
- 53452
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Part number
- 20219742
- Part serial
- 75664
- Condition
- Failed
- Location
- Aft Fuselage
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- B
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.