hi there all

does anyone know if t there is a document which contains the regulations for checked luggage for most of the major airlines?

i was checking american airlines reg. and they say

Baggage measuring more than 126 in/320 cm will not be accepted as checked baggage.

does anyone know if thats linear inches or do thjey allow you to travel with a 10 ft item?

thanks alot for any and all help

-dom