when user type in 3 or 4 capital letter into the search, i think the search toold should be able to understand the user as to looking for an airport with such a code and thus the airport with code matching the search string should turn up first before airport title matching the string. For instance, when I type PET into the search box, I would expect the first result being turn up would be the Brazil airport PET, however it become the last of all the return result with airports like Saint Petersburg's taking the first place.