A Boeing 727 approaches the speed of sound as it climbs to cruising altitude.

Northwest Airlines Flight 6231 is on its way to pick up the Baltimore Colts. The indicated airspeed continues to rise as the plane climb, but eventually stalls anyway. Find out what happened to this plane on this episode of Black Box Down.

Follow us on Twitter and Instagram @BlackBoxDownPod. https://twitter.com/blackboxdownpod and https://www.instagram.com/blackboxdownpod/

Sponsored by Dollar Shave Club. Go to http://dollarshaveclub.com/BLACKBOXDOWN to try the Ultimate Shave Started Set today for just $5 plus free shipping

Also sponsored by The Jordan Harbinger Show. Go to http://jordanharbinger.com/subscribe to check out the Jordan Harbinger Show today!

Learn more about your ad choices. Visit megaphone.fm/adchoices