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The rule from when American airlines were regulated by the government, stating that an airline had to make their "best effort" to get you on any flight, on any airline. (See for more info on what still exists as sort of a "Rule 240" in most airlines' Conditions of Carriage documents.
by Nick1693 June 25, 2008
11 11

Words related to Rule 240:

240 airlines air travel rule travel