First launch attempt of MX-770 technology demonstrator. Seven rockets were built in total. There is very inconsistent information on the flight series. One source speaks of six launches, another of four, and a third of three. It seems that there were six launch attempts, three of which never made it very far off the pad, two made it some distance aloft, and only one was considered somewhat successful (reaching Mach 2.23 and an altitude of 18 km).

Full-range test with final dive maneuver. Swan song of vehicle eight after three successful recovered missions. During takeoff the vehicle was aloft, then settled back to the runway with its brakes locked. The tires burst, the gear failed, the gear doors were in contact with the runway, carving grooves in the pavement as they retracted. Then, astonishingly, the vehicle rose from the runway, completed a successful full-range supersonic flight with terminal dive into the waters off Grand Bahamas.

Continuing problems with APU reliability delayed the launch to November. Various problems extended the countdown from the planned 7 hours 30 minutes to 14 hours 30 minutes. Successful launch, then vehicle pitched up and disintegrated 26 seconds after launch, impacting 4 km down range. It was found the pitch rate gyro had been installed backward.

The first Jupiter flight was fired at 1651 hours EST from AMR. The missile achieved a 48,000 foot altitude. Flight terminated at 7.4 seconds because of missile break-up. Failure was attributed to overheating in the tail section. The trajectory to this point was as predicted.