Exceptions are the rule
I am packing for an arduous 3 week long business trip, and was reviewing the baggage restrictions because I need to take a lot with me. One can only wonder what series of hijinks set off this highly important amendment to the American Airlines baggage policy:
“Due to their size Bass Fiddles are not accepted in the coach cabin and are only accepted on certain aircraft types, please contact an American Airlines representative at 1-800-433-7300.”
From http://www.aa.com/aa/i18nForward.do?p=/travelInformation/baggage/baggageAllowance.jsp
"I stand before you, Members of the Board, to urgently warn you: unless we amend our baggage policy immediately, we are destined to relive what we now all know as 'The Flight 267 Incident'."