There have been some errors in recent Future of Flight articles:
The Cornu helicopter of 1907 was the first tandem rotor helicopter, not the Piasecki PV-3 of 1945;
The FA 61 was not the first practical helicopter, as it first flew in December 1936, whereas the Breguet-Dorand Gyroplane had flown a few days before, on 24 November, for 1h 03min, over a distance of 44km (24nm) (Flight International, 12-18 August);
The Bell XV-3 was not the first to transition to aeroplane mode (on 18 December 1958); it was the tiltwing Vertol VZ-2 in July 1958 (Flight International, 9-15 September).
While you mention the first piston, turboprop and turbojet, you forgot the ramjet (the Leduc 010 became the first ramjet aircraft to fly, on 21 April 1949).
Philippe Jung
President History Commission Association Aeronautique et Astronautique de France Verneuil sur Seine France
Source: Flight International
