The below article is a good read on a flight record set many years ago.
They stayed in the air eleven hundred and twenty-four hours and seventeen minutes, or almost forty-seven days. It meant sixteen hundred and ninety-two refueling runs between that Buick and the airplane.
Enjoy
http://www.farewellanalog.net/flying_record.htm
KYUM Flying Record (So you need to build time in a hurry)
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