Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to adopt a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R66 helicopters. This proposed AD would require replacing the tail rotor drive shaft yoke assembly and inspecting for sealant. This proposed AD is prompted by reports of tail rotor driveshaft failures. The actions of this proposed AD are intended to correct an unsafe condition on these products.