From 2023 (YouTube Edition): A New Cure for an Old Woe Developed by Alberta, Canada-based Airworthiness Resources Corporation (arc), the arc Quikex (Quick Exit) is a Transport Canada-Approved Cessna 206 forward cargo door modification. Certified under Supplemental Type Certificate (STC) SA20-34 and marketed formally as the Split Forward Cargo Door Window, arc’s Quikex modification allows Cessna 206 passengers to quickly and safely disembark the aircraft in emergency situations by opening the airplane’s forward cargo door—regardless of flap position.