Cirrus SF50 VLJ Enters Final Testing Phases Towards Certification It has been a long time that Cirrus Aircraft have been working on the SF50 VLJ -just under ten years-. Interestingly, in those ten years and even before many manufacturers have tried to bring a single-engine very light jet or a light jet to market and failed to this point. Think Diamond, Piper and even Eclipse. The Cirrus SF50 VLJ is closer to year-end certification now than it ever was and the finish line is actually in sight. The latest achievement is the Type Inspection Authorization (TIA). TIA initiates formal FAA flight evaluation of the Vision SF50 type design, airworthiness, performance and handling properties. This TIA allows Cirrus to move forward with FAA Conformity Inspections and Certification Flight Tests with an FAA pilot on board the aircraft, one of the final elements needed for Type Certification.