Cost per Available Seat Mile

The cost to an airline to fly a seat 1 (nautical) mile
a stretched version of an aircraft often has a lower CASM due to more seats on board to spread the costs.

A 777-300ER has lower CASM than a 777-200ER.
by zkpilot May 22, 2011
acronym for Crazy Asian Styling Mofo. Usually used as a noun, by substituting Mofo for Mophonic, forming a verb
Driving 50km over the speed limit while cutting your cronic on your lap with a machete? You CASM!
or
Jo, ja c da casmic rims on dat beast!
or
flamo, you are a deadset casm
by Djoe April 06, 2004

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