We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44, R44 II, and R66 helicopters. This AD requires inspecting the main rotor blade (MRB). This AD was prompted by a determination that some MRBs may have reduced blade thickness due to blending out corrosion. The actions are intended to prevent the unsafe condition on these products.
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Airworthiness Directives; Robinson Helicopter Company Helicopters
We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44, R44 II, and R66 helicopters. This AD requires inspecting the main rotor ...
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82 FR 716
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“Airworthiness Directives; Robinson Helicopter Company Helicopters,” thefederalregister.org (January 4, 2017), https://thefederalregister.org/documents/2016-30832/airworthiness-directives-robinson-helicopter-company-helicopters.