Robinson Helicopter built 356 helicopters (212 R44s, 88 R66s and 56 R22s) last year, a significant increase from the 162 helicopters it manufactured in 2010. The Torrance, Calif.-based company also booked orders for 360 turbine R66s last year, and it began this year with an order backlog for 400 helicopters. Robinson recently expanded its manufacturing facility and announced it is hiring additional employees.