John Gregory Roncz was an American aerodynamicist involved in the development of over 50 different aircraft, ranging from ultralights, round-the world record breakers and military transports, to yacht
Rutan 77 Solitaire N142SD
(Left to right) Burt and Dick Rutan, John Roncz and Mike Melvill at a Voyager 25th anniversary celebration in 2011.
Garrison Melmoth 2 N2MU at EAA AirVenture Oshkosh in 2011
The Cirrus SR22 is a single-engine four- or five-seat composite aircraft built since 2001 by Cirrus Aircraft of Duluth, Minnesota, United States.
John Roncz
…Carter PAV Cirrus SR20 and SR22 Cirrus/Israviation ST50…
2004 Cirrus SR22 G2 front view, showing how the doors open
2007 Cirrus SR22-G3 Turbo
2013-built Cirrus SR22 G5