NTSB Urges Immediate Airworthiness Directive for Robinson R22 Helicopter
The National Transportation Safety Board has called for urgent regulatory action to address safety concerns regarding the main rotor system of the Robinson R22.
The National Transportation Safety Board has issued a recommendation directed at the Federal Aviation Administration. The board urges the agency to issue an immediate airworthiness directive concerning the Robinson R22 helicopter. This directive would require reducing the never exceed airspeed to provide an adequate margin of operating safety. This reduction is necessary until the reason for in-flight main rotor blade divergent behavior is established and any required design changes are approved and implemented. The recommendation is marked as urgent.
Original regulatory source: https://data.ntsb.gov/carol-main-public/sr-details/A-94-143