‘Tiltrotor’ Aircraft Goes Civil

     WASHINGTON (CN) – The Federal Aviation Administration has proposed noise certification standards for a civil version of the hybrid airplane-rotorcraft known as the tiltrotor.

     The tiltrotor takes off like a helicopter, and then the blades tilt so it can fly like a plane.
     The most recognizable U.S. military use of a tiltrotor is the the V-22 Osprey, which seats 24. The civil version currently being designed is to seat nine passengers.
     The standards would apply to the issuance of the original civil type certificate, changes to the type certificate, and standard airworthiness certificates for civil tiltrotors.
     The FAA plans to adopt guidelines from the International Civil Aviation Organization for tiltrotors certificated in the United States, so the new standards will mesh with international ones. Those guidelines are based on U.S. helicopter noise limits, with additional requirements due to the unique design of tiltrotors.
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