Couzinet 70

70 Arc-en-Ciel
General information
TypeLong-range commercial monoplane
ManufacturerSociété des Avions René Couzinet
Primary userAéropostale
History
Manufactured3
Introduction dateMay 1934
First flight11 February 1932

The Couzinet 70 was a French three-engined commercial monoplane designed and built by Société des Avions René Couzinet.

The Couzinet 70 Arc-en-Ciel III ('Rainbow') was developed from the Couzinet 20 by René Couzinet. The Couzinet 70, which was larger than its predecessors, was developed originally as a mail plane for use of Aéropostale's South Atlantic service.

It was a low-wing monoplane that had a fixed tailwheel undercarriage and powered by three Hispano-Suiza 12Nb inline piston engines. The two wing mounted engines could be accessed mid-flight through tunnels in the wing. After route-proving in 1933, the aircraft was modified and re-designated as the Couzinet 71 and entered service with Aéropostale in May 1934.