We all have countless opportunities and temptations day-in and day-out to either break the law, or behave in an unethical or immoral manner. You get to a stop sign on a deserted street: Do you stop? A cashier gives you the wrong amount of change: Do you speak up? An attractive person flirts with you when you're out of town: Do you flirt back? That blockbuster movie or great album or bestselling book is available on a file-sharing site: Do you download it?
My ethics and morals don't change just because I board an airplane.