The Brantly 305 is an American five-seat light helicopter of the 1960s.

The helicopter is powered by a Lycoming IVO-540 flat six piston engine.

[1] The Model 305 first flew during January 1964 and FAA type approval was received 29 July 1965.

[citation needed] Hynes developed a more powerful and streamline version in 1993, none were produced.

[citation needed] Data from Jane's All The World's Aircraft 1976-77 [3]General characteristics Performance