About Us

Over 90 years of combined expertise.

Aviation Technical Consultants (ATC) is a professional engine overhauler and repair shop for piston engine aircraft.  We are an approved Robinson Aircraft Service Centre and are a Transport Canada Approved Maintenance Organization (AMO).

Our team of highly experienced aircraft maintenance engineers are industry experts, well known for our meticulous attention to detail and customer satisfaction.

Originally founded by John Donaldson in 1987, and officially called Aviation Technician Consultants since 1996, we have been a leader in the aircraft repair industry for over 25 years.

ATC is centrally located in Ontario, 50 miles north of Toronto and 15 minutes outside of Orillia in Ramara.  Fly your helicopter right to our door or your airplane into Lake St. John Airport which is conveniently located on Lake St. John. You can fly in, float plane in, or trailer your aircraft or engine to us.