What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Rialto, CA. (L67): prior to take-off the student pilot attempted a 360 degree clearing turn to the right. At approximately 180 degrees the rotation accelerated and became uncontrollable. The rotational speed continued to increase for an estimated 360 degrees when the helicopter impacted the taxiway and came to rest in an upright position. The aircraft sustained substantial damage. The student pilot was uninjured.
As the FAA filed it
RIALTO, CA. (L67): PRIOR TO TAKE-OFF THE STUDENT PILOT ATTEMPTED A 360 DEGREE CLEARING TURN TO THE RIGHT. AT APPROXIMATELY 180 DEGREES THE ROTATION ACCELERATED AND BECAME UNCONTROLLABLE. THE ROTATIONAL SPEED CONTINUED TO INCREASE FOR AN ESTIMATED 360 DEGREES WHEN THE HELICOPTER IMPACTED THE TAXIWAY AND CAME TO REST IN AN UPRIGHT POSITION. THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE. THE STUDENT PILOT WAS UNINJURED.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.
Other reports on N90570 · 1
Matched to the same aircraft by N-number and date.