Keystone-Loening K-84 "Commuter"

 

The Keystone-Loening K-84 Commuter was a single-engine flying boat, and first produced in 1926.

It is similar in configuration to the Sikorsky S-39; the Keystone-Loening is a biplane, while the Sikorsky is a monoplane.  The twin-engine Sikorsky S-38 is also similar, but with a smaller lower wing. The Keystone-Loening wing also had a small dihedral, while the Sikorsky wings were flat.

Specifications