Crosswind Landing Testing

www.youtube.com/watch?v=ljOxo0s33sI

This is a pretty cool video of a 777 & 747 SP landing in a cross winds down in Brazil. This little item shows the Boeing factory determining the demonstrated crosswind landing limits on the 777 and the 747SP. The engineers make educated guesses, but then the test crews have to go actually prove the numbers. They sneak off to Brazil to do these tests at a certain remote BAF airbase famous for its continual atrocious crosswinds...