This question on ELU asked
In this sentence "Look at the timetable. Hurry up! Flight 4026 takes off at 6:20." Can I replace "will take off" with "takes off"?
A user commented on the question like this
They do not mean the same. The Simple Present Tense (Present Indefinite) is used for something that happens regularly/ usually/ normally -- Flight 4026 (generally) takes off at 6:20 . On the other hand, the formal future tense will+verb indicates a (definite) possibility in the future
and I asked that user this question
Are you saying that it would be incorrect to say The plane takes off at 6:20 in the case where that route and timing had never been flown before and will never be flown again by that plane ?
They kindly directed me to ELL for an answer, so here I am asking the question
Is it incorrect to say The plane takes off at 6:20 in the case where that route and timing had never been flown before and will never be flown again by that plane?