Remember how a JetBlue plane made an emergency landing in Sacramento last month, one that blew two tires and sparked a small fire? Well, the reason for the landing has been revealed. It was due to the plane's parking brake being on at the time of landing.

Oops.

According to NY Post, "After looking into the incident, National Transportation Safety Board investigators found the parking brake on the plane was turned on as high as 5,100 feet above sea level, but the two pilots had no idea."