known factIt is of no significance that this FAA DA concerns the 777 and that the Air India tragedy involved a 787. But it would be a specious argument to say that FADEC problems on other aircraft have no bearing on what happened to Air India 171. From these assumptions, a chain of hypothetical events is constructed which is then submitted to viewers as the probable cause of the tragedy. The sequence of events in the AI 171 accident can be explained in simple terms of motion, momentum and kinetic energy. That aircraft uses Rolls Royce engines.On July 11, 2021 fuel to both engines of an Air Baltic A220 was cut off on touchdown.