How much legroom will you find when you reach your airline seat? What's this aircraft "seat pitch" business all about? And how is it measured on board the plane? If you're a newly minted frequent flyer, or just need a refresher on what pitch is and how it works, we've got you covered. What is seat pitch? Seat pitch is a technical term used by airlines, and refers to the distance between the back of your seat and the back of the seat in front. Pitch includes not only your legs but the dep...