Airworthiness Standards: Rotorcraft Engine Rotor Burst Protection

This final rule amends the airworthiness regulations to require that manufacturers of new design transport category rotorcraft minimize the adverse effects of a turbine engine rotor failure. Turbine engine rotor failures have occurred resulting in the release of high energy engine rotor fragments or other engine component fragments. These fragments have damaged critical rotorcraft structures, systems, controls, and adjacent engines, as well as caused serious or fatal injuries to passengers and crewmembers. This action is intended to minimize these hazards.