Robinson R44 Raven I — Other Documents

This document is an accident investigation report by the Australian Transport Safety Bureau (ATSB) concerning the in-flight break-up of a Robinson R44 Raven I helicopter, registered VH-NBY, which occurred on July 4, 2020, near Broome Airport, Western Australia. The report details the circumstances of the accident, the findings of the investigation, and safety recommendations aimed at preventing similar incidents in the future. It highlights the importance of adhering to operational procedures, particularly in response to unusual vibrations that may indicate mechanical failure. The report serves as a critical resource for pilots, maintenance personnel, and aviation safety stakeholders, emphasizing the need for thorough pre-flight checks and adherence to maintenance protocols.

• The Robinson R44 Raven I helicopter VH-NBY experienced an in-flight break-up on July 4, 2020, resulting in fatalities.
• Unusual vibrations in the tail rotor pedals were reported prior to the accident but were not adequately investigated.
• The pilot did not have a valid flight review for the R44 at the time of the accident, which is critical for safety.
• The helicopter is powered by a Lycoming O-540 engine and has a conventional 2-bladed tail rotor system.
• The investigation emphasizes the importance of adhering to emergency procedures and maintenance protocols.