In the main, aircraft registrations can be pretty bland and boring but there are many out there that do offer a sense of hilarity, fun and satisfaction. Some registrations say alot about the owner or the company owning/operating the aircraft. Here are a few and if YOU know any, feel free to add to the list. N96UA This is worn by a Gulfstream G550 operating for the Under Armour brand. N (U.S registration) 96 (when the brand was established) UA (initials of the brand).