You have obtained your first professional accounting position as a staff accountant at Southwest Airlines. Your supervisor informs you that the company is about to engage in a major renovation of its fleet of planes. This will include adding newer, more comfortable seats and installing TV's on the back of seats so that the company can compete better with Jet Blue. Your boss would like you to research the appropriate accounting for these renovations. Write a brief memo to your boss responding to his request citing the appropriate codification references in your memo.