Robinson R66 Turbine — Other Documents

This document is an investigation report by the Australian Transport Safety Bureau (ATSB) regarding a fatal accident involving a Robinson R66 helicopter, registered as VH-KFT. The incident occurred on 26 October 2023, when the helicopter experienced an in-flight break-up while flying near Hawks Nest, New South Wales. The report details the circumstances leading to the accident, including the pilot's actions, aircraft performance, and environmental conditions. It also discusses the design characteristics of the Robinson R66 and the implications of low-G conditions, particularly in turbulence. The ATSB provides safety recommendations and highlights the importance of pilot awareness regarding low-G situations and the modifications available to improve aircraft safety.

• The Robinson R66 experienced an in-flight break-up due to a low-G condition induced by turbulence.
• The pilot was flying at an altitude of approximately 900 ft and an indicated airspeed of about 115 kt when the accident occurred.
• The aircraft was within weight and balance limits at the time of the accident, estimated at 927 kg.
• The investigation highlighted the risks associated with the asymmetrical horizontal stabilizer design in low-G conditions.
• Pilots are advised to avoid turbulent conditions and reduce airspeed to 60-70 kt when flying in turbulence.