What happened
A Hughes 269C helicopter crashed into terrain during a flight intended to be the pilot's first supervised solo. The pilot was undergoing instruction for an Airplane and Glider (A-P) on Rotorcraft category rating and had previously completed approximately 10 hours of dual instruction.
During the initial phase of the flight, the pilot took off to a hover but noted that the throttle friction was too loose. The pilot subsequently landed the aircraft to adjust the throttle friction setting. Upon taking off for a second time and reaching a hover, the pilot entered a right hovering turn. During this maneuver, the engine RPM dropped. In an attempt to compensate, the pilot increased the throttle, which caused the helicopter to begin spinning to the right. The pilot was unable to maintain control, resulting in the aircraft impacting the ground.