
Several years earlier, NASA had acquired a production Lockheed F-104A for use as a research aircraft. On April 13, 1959, Neil Armstrong ferried the supersonic jet from Lockheed's Palmdale, Calif., facility to NASA's Flight Research Center, where it was equipped with special instrumentation and re-designated as a JF-104A. It initially served as a launch platform for parachute test vehicles and experimental sounding rockets. Later, it was used for mission support, pilot proficiency and as a chase plane for other research aircraft. In all, seven NASA pilots flew the airplane 249 times.
On Dec. 20, 1962, NASA research pilot Milton O. Thompson was scheduled to evaluate weather conditions over Mud Lake, Nev., in preparation for the launch of an X-15 rocket plane over that area a few hours later. Weather flights were critical because go/no-go decisions were based on real-time observations made along the planned flight path.
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During his first approach he cut throttle, extended speed brakes and began a steep, descending turn toward a runway marked on the lakebed's surface. Decelerating, he lowered the flaps and held 300 knots indicated airspeed as he dove toward the airstrip. The jet lost altitude at a rate of 18,000 feet per minute until he leveled off at 800 feet, lit the afterburner and climbed away.
During his second approach, Thompson noticed the airplane was rolling to the left. He applied full right aileron and rudder but failed to stop the motion. Seeing his airspeed dropping rapidly, he advanced the throttle to full and relit the afterburner. As his speed increased to 300 knots the roll ceased, leaving the airplane in a 90-degree left bank. Thompson increased his speed to 350 knots to gain more control effectiveness and began to troubleshoot the problem.
Guessing that the airplane was experiencing an asymmetric control condition – either flaps or speed brakes – he repeatedly cycled the roll and yaw dampers, flap-selector switch and speed brakes. He verified that both flaps indicated "up" and visually examined the exterior of the aircraft using his rear-view mirrors. The leading-edge flaps appeared to be up and locked but he couldn't see the trailing-edge flaps. Thompson knew he was in serious trouble and wasn't sure he could land safely. It slowly dawned on him that he might have to eject.
In a last-ditch effort, Thompson radioed NASA-1 – the Flight Operations office – and urgently asked for fellow research pilot Joe Walker, who was suiting up for his X-15 mission.
"Trouble?" Walker asked.
"Right, Joe," said Thompson, "I'm running out of right aileron."
After a brief discussion, Walker decided one of the flaps might be locked in the down position and suggested that Thompson cycle the flap lever again. Thompson tried this and immediately knew it was a mistake, as the airplane started to roll rapidly. He soon realized the situation was hopeless.
"She's going, Joe!" he called.
After four complete rolls, Thompson ejected while inverted. He felt a terrible pain in his neck as the seat's rocket motor blasted him free of the airplane. His body was whipped by air blast, and he began to tumble wildly. After rocket burnout, he separated from the seat but soon realized he was still holding onto the ejection handle. His parachute opened promptly as soon as he released his grip.

At NASA-1, the mood was grim. Thompson hadn't had time to inform anyone that he was ejecting and nobody saw his parachute. Their faces bearing shock and tears, NASA employees stared at the column of thick, black smoke rising in the distance.
NASA Flight Operations chief Joe Vensel hopped in a car and sped across the lakebed toward the crash site, expecting the worst. To his surprise, he found Thompson waiting calmly by the roadside, apparently unharmed.
An investigation revealed that the accident had most likely been the result of an electrical malfunction in the left trailing-edge flap. The investigating board, headed by Donald R. Bellman, gave Thompson high marks for his actions.
"Throughout the emergency," the board's report read, "the pilot showed superior skill and judgment, which contributed materially to his own safety and to the understanding of the causes of the aircraft loss."