This Is What A 900 Knot Closure Rate Looks Like Jul 15, 2016 | Aircraft, Airlines, Safety | 0 comments Aircraft flying in RVSM airspace have 1,000 feet of vertical separation, which can look really close. Especially when your closure rate to another aircraft is over 900 knots. Here’s what it looks like from the flight deck. Quoted Share this:FacebookGoogleLinkedInTwitterSkypePrintRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Submit a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.