This decision followed two aircraft accidents involving wake turbulence. A series of meetings were held to consider the various implications of wake turbulence and to work out a specific recommendation on the new weight classifications. This was accomplished in June 1995 and a position paper containing nine recommendations was submitted to the FAA Wake Vortex Steering Committee for action. Subsequently, a smaller implementation team of FAA personnel was established to work out the detailed procedures and guidance for implementing the new weight classifications and associated separation standards and responding to the other eight recommendations. For more information, FAA Notice 7110.157, Wake Turbulence, is available from the Air Traffic Service.
Weights are maximum certificated takeoff gross weight.
Aircraft capable of takeoff weights of more than 255,000 pounds, regardless of weight during any particular phase of flight. Aircraft of 41,000 pounds or less maximum certificated takeoff weight. This action moves 55 aircraft into the small classification that were previously classified as large. The effective date of the new changes is August 17, 1996. On-going studies may exempt other aircraft in the future.