The Bell Model 214ST (ST for super transport) was a development of the Model 214B (known as the Biglifter) and replaced that model on the production line in early 1981, deliveries of 214STs to customers beginning in early 1982.

In 1974 the Bell Helicopter Company announced its intention to develop the Model 222, and the first of five prototypes was flown for the first time on 13 August 1976. This model received FAA certification in pre-production configuration on 16 August 1979.

The Bell 230 is a utility helicopter designed with simplicity, low cost, low maintenance and reliability in mind, and was introduced to the Bell range of helicopters in 1991 and is a development of the Bell 222B series.

The Model 407 is a significantly improved development of the Bell 206L-4 LongRanger, with better range, payload, cruising speed and hovering ceiling.

Probably one of the most, if not the most, produced helicopters in the world, the Bell 47 series began when the Bell Aircraft Corporation commenced the development of helicopters in 1941 and flew the first of five experimental two-seat prototypes in 1943, the first being known as the Model 30

The prototype of the Ecureuil (Squirrel) light utility helicopter, powered by a Lycoming LTS 101 turboshaft, was flown for the first time on 27 June 1974. On 14 February 1975, the second prototype was flown, powered by the French Arriel turboshaft. The type subsequently entered production France at an initial

In the 1950s Messrs T G Adams and Paul Wilson in California designed and developed a single-seat light sporting helicopter for private use. After a prototype was completed and tested, they produced plans for construction of the machine, then known as the Adams Wilson Hobbycopter, for sale to amateur constructors.

This light single-seat helicopter was built in the Melbourne suburb of Black Rock and is believed to have been completed in about 1948. It took about two-years to complete and is thought to be, if not the first, one of the first helicopters designed and built in Australia.