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FH-1100 (OH-5) FIRST FLIGHT by Jack Schweibold. Hiller Air Museum located in San Mateo, California, announced it will again host the Vertical Challenge Helicopter Air Show June 16th, 10am to 4pm. (1) This comprehensive showcase of rotorcraft brings back memories of my first flights in the predecessor of the Fairchild Hiller FH-1100, the YOH-5 some 50 years ago. I […]