Van Horn Aviation returned to flight testing this week as it celebrated a successful first flight of its MD 530F main rotor blades on July 24, 2012. The flight testing, held at the MD Helicopters facility in Mesa, Ariz., validated the design changes made to the blade since last year’s initial hover test and allows the program to move forward toward certification. VHA flight test personnel expect to continue through the various phases of flight testing through the third quarter 2012.