Which rule limits the time passenger aircraft operators can remain on the ramp for domestic flights?

The rule that limits the time passenger aircraft operators can remain on the ramp for domestic flights is established by the Department of Transportation (DOT) under its tarmac delay regulations. This regulation is designed to minimize the inconveniences faced by passengers during extended tarmac delays. In particular, the rule specifies that for domestic flights, airlines must allow passengers to deplane after the aircraft has been on the tarmac for three hours, barring any safety or security concerns that could prevent disembarkation. The three-hour limit is crucial as it aims to strike a balance between airline operational needs and passenger rights, ensuring that individuals are not kept onboard for excessive periods without access to facilities or services.