Federal Aviation Administration May 17, 2010 – Federal Register Recent Federal Regulation Documents

This action proposes to amend Class E airspace at Litchfield, MN. Additional controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures (SIAPs) at Litchfield Municipal Airport. The FAA is taking this action to enhance the safety and management of Instrument Flight Rules (IFR) operations at the airport.

The FAA hereby provides notice of intent to release certain airport properties 5.88 acres at the Tampa International Airport, Tampa, FL from certain conditions, reservations, and restrictions as contained in a Quitclaim Deed agreement between the FAA and the Hillsborough County Aviation Authority, dated November 5, 1947. The release of property will allow the Hillsborough County Aviation Authority to use property for other than aeronautical purposes. The property is located in the southeast quadrant of Tampa International Airport property, Hillsborough County, Florida. The parcel is currently designated as aeronautical use. The property will be used for nonaeronautical use/revenue generation. The fair market value of the property has been determined by appraisal to be $2,690,000. The airport will receive at least fair market rental value for the property. Documents reflecting the Sponsor's request are available, by appointment only, for inspection at the Tampa International Airport and the FAA Airports District Office.

This action proposes to amend Class E airspace at Center, TX adding additional controlled airspace necessary to accommodate new Standard Instrument Approach Procedures (SIAPs) at Center Municipal Airport, Center, TX. Adjustments also would be made to the geographic coordinates of the Amason nondirectional beacon (NDB). The FAA is taking this action to enhance the safety and management of Instrument Flight Rules (IFR) operations at the airport.

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

This action amends Jet Route J-120, in Alaska. The FAA is taking this action in preparation of the eventual decommissioning of the Barter Island (BTI) Non-directional Beacon (NDB) at the Village of Kaktovik, Alaska. This action ensures the safe and efficient use of the airspace within the National Airspace System (NAS).

We are adopting a new airworthiness directive (AD) for certain Model DC-9-30, DC-9-40, and DC-9-50 series airplanes. This AD requires inspecting to determine the part numbers of the forward and aft auxiliary tank fuel boost and transfer pump conduit/conduit assembly and conduit assembly electrical connector, as applicable, and corrective actions if necessary. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to detect and correct the potential for an arc/spark condition to occur within the fuel boost or transfer pump conduit assembly connectors and propagate into the forward and aft auxiliary fuel tanks, which could result in a fire or explosion.

We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

This amendment adopts a new airworthiness directive (AD) for the Sikorsky Model S-92A helicopters. The AD requires replacing the main gearbox (MGB) filter bowl assembly with a two-piece MGB filter bowl assembly and replacing the existing mounting studs. The AD also requires inspecting the MGB lube system filters, the housing, the housing threads, and the lockring counterbore and repairing or replacing them as necessary. This amendment is prompted by tests indicating that an existing MGB filter bowl assembly can fail under certain loading conditions including those associated with a damaged MGB filter or mounting stud resulting from high frequency maintenance tasks. Testing of the improved MGB filter bowl assembly demonstrates a significant increase in strength and durability over the existing filter bowl. The actions specified by this AD are intended to prevent failure of the MGB filter bowl assembly due to failure of the mounting studs or the filter bowl, loss of oil from the MGB, failure of the MGB, and subsequent loss of control of the helicopter.

We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

The FAA is superseding an existing airworthiness directive (AD) for certain Turbomeca Arriel 1B, 1D, 1D1, and 1S1 turboshaft engines. That AD requires initial and repetitive relative position checks of the gas generator 2nd stage turbine blades on Turbomeca Arriel 1B (that incorporate Turbomeca Modification (mod) TU 148), Arriel 1D, 1D1, and 1S1 turboshaft engines that do not incorporate mod TU 347. That AD also requires initial and repetitive replacements of 2nd stage turbines on Arriel 1B, 1D, and 1D1 engines. This AD requires lowering the initial and repetitive thresholds for replacement of 2nd stage turbines on Arriel 1B, 1D, and 1D1 engines. This AD results from reports of new cases of failures of 2nd stage turbine blades since we issued AD 2008-07-01. We are issuing this AD to prevent the failure of 2nd stage turbine blades, which could result in an uncommanded in- flight engine shutdown, and a subsequent forced autorotation landing or accident.