This is Nuts

The Korean government is investigating the daughter of Korean Air CEO Cho Yang-ho, who kicked a flight attendant off the plane at JFK airport for failing to serve nuts correctly in business class. She also works for the company in an executive role apparently. There is an investigation in to whether or not she had the right to do that, and even if she did, whether or not delaying a flight for 11 minutes in one of the busiest airports in the world is really necessary over macadamia nuts. You'd think a simple word to the attendant when they arrived at Incheon would have been enough.

read about it here

That being said, I've always said how great Korean air is, and always pay for the Asian airlines when flying home to avoid Air Canada or the American carriers (though so far they have always been the cheaper option anyway to be fair). Maybe this is why.