Elmwood Aviation
Elmwood Aviation is a Canadian aircraft manufacturer, founded by aircraft designer Ron Mason and based in Frankford, Ontario. The company specializes in the design of light aircraft for amateur construction, especially for missionary aviation use. The Christavia aircraft series name means "Christ-in-Aviation".
Plans are marketed by Aircraft Spruce & Specialty Co as well as directly by Elmwood Aviation.
All of Mason's designs use his own custom airfoil profile. The Christavia Mk I first flew in 1983 and over 350 had been completed and flown by 2002.
Aircraft
| Model name | First flight | Number built | Type |
| Christavia Mk I | 1983 | 350 | Two seat tandem amateur-built aircraft |
| Christavia Mk II | Two seat side-by-side configuration amateur-built aircraft | ||
| Christavia Mk IV | 250 | Four seat amateur-built aircraft |