This page gives details of some of the aircraft types that were offered or promised to the Royal Canadian Air Force/Canadian Armed Forces but not delivered, cancelled official orders, and types have been falsely reported as being in service.
Boeing F/A-18E/F Super Hornet
A planned order for 10 F/A-18E and 8 F/A-18F Super Hornets was abandoned in December 2017 after Boeing accused the Canadian Government of unfairly subsidising the Bombardier C-series airliner.
Lockheed CC-141 Starlifter
A order for 4 C-141A Starlifter transports was placed with Lockheed in 1967 but cancelled when the company realised it would be uneconomic to build such a small batch. The designation CC-141 had already been assigned. The CC-137 (Boeing 707) was obtained instead.