The home of everything related to Twin Navion and Camair aircraft
The first two Navions converted to a twin. The first was converted for Dauby Equipment Company, while the second was sold to Jack
Riley, who also purchased the design and production rights. Jack Riley's D-16 was quickly remanufactured by the Riley Aircraft Corp.
to serve as the first example of the D-16 Riley Twin.
It appears that the first three D-16s converted by Riley Aircraft did not receive a Twin Navion (or TN) serial number. Its known
that the original Twin Navion conversions pre-dated the CAA's Supplimental Type Certificate (STC) process and were originally
certified under Note 3 of the single Navion's Type Certificate. Because of this, all D-16s had to carry both their original single
Navion and new Twin Navion data plates.
Based on research done by TwinNavion.com (both through the FAA records, and by inspecting the two surviving aircraft), its our
belief that the first three D-16s built by Riley did not receive serial numbers in the TN series, but maintained those serial
numbers assigned when they were single Navions.
In our search for Twin Navion photos, we've uncovered several cases where we've been unable to match the plane to its Twin Navion
serial number. If you feel that you can help give any of these planes an identity, we'd very much appreciate hearing from you.