Xtreme Prototypes X-15A-2 SE with full ablative coating. Note the closed eyelid on the left window.
- Arrived at Edwards AFB in February 1964
- First captive flight: June 15, 1964
- First powered flight: June 25, 1964 - Mach 4.59 at 83,300 feet (pilot: Robert Rushworth)
- Last flight: October 3, 1967 (pilot: Pete Knight)
- Number of flights: 22
- Highest Mach number: Mach 6.7 at 102,100 feet (October 3, 1967; pilot: Pete Knight)
- Highest speed: 4520 mph at 102,100 feet (October 3, 1967; pilot: Pete Knight)
- Highest altitude: 249,000 feet at Mach 5.03 (August 3, 1966; pilot: Pete Knight)
