Aviation was in David McDevitt’s family since 1914 when his father Walter was an aircraft mechanic in WW1 then later retiring in the 1960’s as chief inspector at Trans-Canada Airlines(Air Canada). 

David started flying at the age of sixteen but waited until he finished University to concentrate more on his flying but still did not follow the aviation aspect of it until later in his career. After University he went on to work at Texas Instruments as a product specialist which is how he really got into electronics. After 3 years with Texas Instruments, he went to work at another company as a technical sales rep, and he called on companies like Raytheon, Litton Systems and Westinghouse. Especially Litton because he became involved in the cruise missile guidance system, which was developed at one of Litton’s Skunk Works facilities in Toronto.

That is what really got him involved in aviation, and at that time he started taking lessons and flying. It took about a year and a half to get his pilot’s license, then within the next two years got his commercial license and multi-engine within the next 2 years after that. By 1972 he had his airline transport license and rating. Since he was spending more time flying, he decided to go into aviation full time and start his own avionics shop.