
The PM-3 Duet is basically an enlarged Minor airframe. The Minor fuselage is fattened to take two people side-by-side and restressed to take a larger engine. Some modification to the wing and tail surfaces is also involved.
The design was originally designated Luton Minor III but was re-designated the Phoenix PM-3 Duet.

The prototype, G-AYTT PFA.841 was built by A.S. Knowles, who was involved in the type’s development. It first flew, at Fairoaks, on 22 June 1973 with a Continental C90 engine in a Condor cowling.

Engine: Continental C90, 90 hp
Cruise: 100 mph
Stall: 35-40 mph