July 29, 200520 yr Commercial Member Hello gentlemen, Good luck with the release of the PMDG 747! It looks like a great product. While looking over the manual, a question came up: how does the FMC calculate a leg change? Is it based on distance to waypoint, airspeed, heading? I do not understand how it is done, and I would greatly appreciate any help.Yours Truly,Tiberiu Brasov
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