F-14 Tomcat swing-wing trials

Tomcat No. 3, with Grumman's Chief Test Pilot, Chuck Sewell, at the controls. During aircraft testing, several flights were flown with the right wing locked in the forward position of 20 degrees, and the left wing at 35, 50, 60 and 68 degrees of sweep in flight. Amazingly, it was discovered that in the event of an operational in-flight malfunction, the Tomcat would remain controllable enough for carrier landing in this configuration.

via www.Sierrahotel.net