EASA SIB 2016-10: Robinson R22, R44 and R66 helicopters — Risk of flight in turbulent atmosphere

What to do

Operators and flight crews of Robinson R22, R44, and R66 helicopters should be informed about the contents of Robinson Helicopter Company's Safety Notice SN-32 and operate the helicopters accordingly. Flights in high winds or turbulence should be avoided, and if encountered, the speed limitations and procedures in SN-32 must be strictly followed. There are no mandatory compliance deadlines as this bulletin provides non-mandatory recommendations.

Summary

EASA Safety Information Bulletin 2016-10 is an informational bulletin addressing the risk of flight in turbulent atmosphere for Robinson R22, R44, and R66 helicopters. It highlights an accident involving a Robinson R44 where mast bumping occurred due to flight at speeds higher than recommended in turbulence. The bulletin references manufacturer safety notices and investigation recommendations to improve operational safety in turbulent conditions.

What changed

This bulletin introduces safety recommendations emphasizing adherence to the speed limits specified in Robinson Helicopter Company's Safety Notice SN-32 when flying in turbulence. It clarifies that these speed recommendations are not included in the Limitation Section of the flight manuals, which has contributed to incidents. No mandatory airworthiness directives or regulatory actions are issued at this time.

Why it matters

The bulletin is important for aviation professionals as it raises awareness of the risks associated with flying Robinson R22, R44, and R66 helicopters in turbulent conditions at inappropriate speeds. Operators and flight crews must understand and follow the manufacturer’s guidance to prevent accidents caused by mast bumping. Compliance teams should ensure that crews are informed about these recommendations to enhance flight safety.