An ordinary day is about to spell disaster for Flight Three-Alpha-Nine. *Author's note: not actually spell disaster, it's not like an anagram or anything. 'Ride tass' is an angram of disaster but that bears no realtion to anything in the story.
Look it's probably best we forget this whole blurb bit - it's already gone awry with the whole anagram thing - best you just read the book to find out what it's about...