In 2001, an Airbus lost its vertical fin and crashed on Long Island; Friday, the NTSB directed Safety Recommendations to the European Aviation Safety Agency (EASA) "to ensure safe handling qualities in the yaw axis throughout the flight envelope, including limits for rudder pedal sensitivity." The 2001 crash involved an Airbus A300, American Airlines Flight 587, and killed all 260 aboard, plus five on the ground. The NTSB determined it was caused when, as a reaction to a wake turbulence encounter, a pilot's application of rudder led to failure of the airliner's vertical fin. The NTSB's new recommendations A-10-119 (PDF) and -120 and a reiteration of previously issued A-04-63 aim to create new yaw axis certification standards and review existing aircraft to determine if they meet the standard. The board directed the recommendations toward the European Aviation Safety Agency and specifically toward its certification specifications for large aircraft.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/ntsb-to-easa-fix-your-rudders