What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) During normal run-up, after full advance of the throttle to flight RPM, with the collective in the locked position, the aircraft began a violent lateral vibration, causing the aircraft to laterally "buck". Control of the aircraft was accomplished by maintaining corrective application and leveling. Emergency shutdown was accomplished. Upon inspection of the aircraft, one of the starflex arms was noted to be shattered and the tailboom and tail rotor driveshaft sustained heavy damage.
As the FAA filed it
(-23) DURING NORMAL RUN-UP, AFTER FULL ADVANCE OF THE THROTTLE TO FLIGHT RPM, WITH THE COLLECTIVE IN THE LOCKED POSITION, THE AIRCRAFT BEGAN A VIOLENT LATERAL VIBRATION, CAUSING THE AIRCRAFT TO LATERALLY "BUCK". CONTROL OF THE AIRCRAFT WAS ACCOMPLISHED BY MAINTAINING CORRECTIVE APPLICATION AND LEVELING. EMERGENCY SHUTDOWN WAS ACCOMPLISHED. UPON INSPECTION OF THE AIRCRAFT, ONE OF THE STARFLEX ARMS WAS NOTED TO BE SHATTERED AND THE TAILBOOM AND TAIL ROTOR DRIVESHAFT SUSTAINED HEAVY DAMAGE.
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 N417AE · 1
Matched to the same aircraft by N-number and date.