The Robinson R-22 is a two-bladed, single-engine light helicopter manufactured by Robinson Helicopter Company since 1979. With over 7,000 units produced, it is the world's best-selling civilian helicopter, widely used for training and personal transportation. The Bell 206 JetRanger is also popular but has lower production numbers, while the Mi-17 is a military transport helicopter, and the AH-64 Apache is an attack helicopter.