Avro 627 Mailplane

The Avro 627 Mailplane was a British biplane developed in 1931 by Avro from the Avro Antelope bomber as a mail plane for use in Canada. Only one was built which ended up being used as a test bed.

Read more about Avro 627 Mailplane:  Development, Operational History, Variants, Specifications (Avro 627 Mailplane)