Three more A-12s were lost in later testing. On 9 July 1964, "Article 133" crashed while making its final approach to the runway when a pitch-control servo device froze at an altitude of and airspeed of causing it to begin a smooth steady roll to the left. Lockheed test pilot Bill Parks could not overcome the roll. At about a 45-degree bank angle and altitude he ejected and was blown sideways out of the aircraft. Although he was not very high off the ground, his parachute opened and he landed safely.