When I originally started using blender it was because I wanted to make aircraft, of the two I modeled, neither saw the light of day. As a bit of motivation for myself I decided to go back to this subject and finally complete a project of the subject that got me using blender.
I decided to model the cavalon autogyro because I really liked the design. My progress throughout is posted on blenderartists http://blenderartists.org/forum/showthread.php?362389-Cavalon-Autogyro
I'm not much of a sculptor, so using the blueprints from the cavalon website I modeled a base mesh in the shape of the fuselage and then did a retopology to model the doors and windows.
Just started work on the interior of the aircraft.