Safety Advisory Notice
To Robinson R22 and R44 maintainers, operators, and pilots
More data is needed to understand ongoing engine cylinder issues in R22 and R44 helicopters
What happened
On the morning of 6 August 2022, the pilot of a Robinson R22 Beta II was flying at about 500–600 ft en route to conduct aerial mustering in northern Queensland. After some time in cruise, the helicopter suddenly began to ‘shake and vibrate’. In response, the pilot conducted an autorotation, flaring the aircraft just above the trees in a heavily wooded area. The aircraft collided with trees and was destroyed…