I ran across an issue where I could not start an aircraft in P3Dv3. This never happened to me before. I tried loading other aircraft and the same issue prevailed. No matter what aircraft I tried, there was no way to start it. My fuel tanks were full by the way. I just could not start any aircraft I loaded. But, instead of doing something drastic, like kicking my PC down the stairs, I found a solution .I Just loaded the default P3Dv3 scenario and then, using that as a starting point, I created a new scenario and saved it. Voila!
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