Karem Aircraft develops and manufactures advanced fixed-wing and rotary-wing aircraft, including manned and unmanned high-eff ... iciency tiltrotors. Karem’s patented Optimum Speed Tiltrotor (OSTR) technology combines the fast, inexpensive, safe operation of efficient fixed-wing airplanes with the robust hover capability of helicopters. Our team of world-class engineers, technicians, and professionals work to create innovative vehicles and improved mobility, including best-in-class rotorcraft and aircraft solutions for commercial and military markets. The company is headquartered in Orange County, California with offices in York, Virginia and Victorville, California. read more