Department of Transportation April 24, 2014 – Federal Register Recent Federal Regulation Documents

We are revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 757-200 and -200PF series airplanes; and Model 767-200 and -300 series airplanes. The NPRM proposed to require doing an inspection to determine the part number and serial number of the hub assembly of the ram air turbine (RAT), and replacing the hub assembly of the RAT with a new, serviceable, or reworked and re-identified hub assembly if necessary. The NPRM was prompted by reports indicating that the counterweights in some hub assemblies of the RATs could be under strength and fracture when the RAT is rotating. This action revises the NPRM by adding airplanes to the applicability; adding an additional part number and serial number inspection to determine if certain RAT hub assemblies are installed; and, for affected RAT hub assemblies, doing an inspection for missing and fractured balance washer screws, and replacement if necessary to address an additional defect identified within the RAT hub assembly. We are proposing this supplemental notice of proposed rulemaking (SNPRM) to prevent an inoperative RAT, which, following a dual engine shutdown in flight, will cause loss of all hydraulic power to the primary flight controls, resulting in subsequent loss of control of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

This action establishes Class E Airspace at Nashville, TN, to accommodate a new Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) serving Nashville International Airport. This action enhances the safety and management of Instrument Flight Rules (IFR) operations at the airport.

This action amends Class D and Class E Airspace, and establishes Class E airspace at Tri-Cities Regional Airport, Tri- Cities, TN. Airspace reconfiguration is necessary to alleviate traffic issues in the surrounding area for Johnson City Airport and Edwards Heliport so aircraft can navigate in and out of their respective airports in Visual Flight Rules conditions under 700 feet. This action enhances the safety and airspace management of aircraft within the Tri- Cities, TN area.

This action amends Class E Airspace at Greenville, ME, as the Squaw Non-Directional Beacon (NDB) has been decommissioned, requiring airspace redesign at Greenville Municipal Airport. This enhances the safety and management of aircraft operations at the airport. This action also updates the geographic coordinates of the airport.