February 25, 2010 – Federal Register Recent Federal Regulation Documents

The Coast Guard is establishing a temporary regulated navigation area on the navigable waters of the Hudson River south of the Troy Locks. This regulated navigation area is necessary to promote maritime safety, and protect mariners and the environment from the hazards associated with ice conditions. The regulated navigation area is intended to restrict vessels with less than 3000 horsepower while engaged in towing operations, from operating on the navigable waters of the Hudson River south of the Troy locks when ice conditions are 8 inches or greater unless authorized by the Captain of the Port New York or a designated representative.

We are adopting a new airworthiness directive (AD) for all Model MD-90-30 airplanes. This AD requires repetitive inspections for cracking of the overwing frames at stations 883, 902, 924, 943, and 962, left and right sides, and corrective actions if necessary. This AD results from reports of cracked overwing frames. We are issuing this AD to detect and correct such cracking, which could sever the frame, increase the loading of adjacent frames, and result in damage to adjacent structure and loss of overall structural integrity of the airplane.