How long can a plane sit on tarmac?

How long can a plane sit on tarmac?

According to the U.S. Department of Transportation (DOT), there are tarmac delay rules that U.S. airlines must follow: carriers are not allowed to hold a domestic flight on the tarmac for more than three hours and an international flight for more than four hours, barring a couple of exceptions (like if the pilot deems … Aug 23, 2019

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