The issue of a single engine fighter has been dealt in the past, and Canada has rejected those fighters because of safety concerns. I guess the question for the government- what has changed, is pilot safety no longer a concern?:
Single-engine F-35’s may endanger Canadian crews
The decision-makers 30 years ago realized that a single engine was a distinct liability for long-distance patrols across the Canadian North and along long coastlines. If the engine failed — and engines do fail — how would the pilot get back?
The decision to opt for two engines when the time came to replace the Starfighters and Voodoos seemed like a no-brainer. Since the twin-engine CF-18 came into service in 1982, it has proved to be reliable. Although some aircraft have inevitably been lost, its safety record sets off no alarm bells.
Yet today Ottawa is proposing to abandon the caution and concern for safety that characterized its CF-18 decision 30 years ago. Why?
Pressure from Washington is clearly a factor...
To be fair, maybe we have solved the single engine "long distance patrol" issue because the F35 won't be able to go very far anyways:
Canada has no way to refuel new jets in air
The Canadian military does not have the ability to conduct aerial refuelling of the F-35 fighter jet it wants to purchase and is now looking at ways to get around that problem.
Options range from paying for modifications to the stealth jets to purchasing a new fleet of tanker aircraft that can gas up the high-tech fighters in mid-air. That option could cost several hundred million dollars, depending on how many new tankers are needed.
In addition, because the F-35 would not be able to safely land on runways in Canada’s north because those are too short for the fighter, the Defence Department is looking at having manufacturer Lockheed Martin install a “drag” chute on the plane.
That parachute would deploy when the aircraft lands, slowing the F-35 Joint Strike Fighter down. But some pilots have said that high winds affecting such runways could make using a drag chute tricky or even dangerous.
Starting to feel like a square peg in a round hole isn't it?