Department of Transportation October 9, 2008 – Federal Register Recent Federal Regulation Documents

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed 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 rule establishes, amends, suspends, or revokes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.

The purpose of this interim final rule is to solicit recommendations for short sea transportation routes to be designated as Marine Highway Corridors and to solicit applications from interested parties to participate in a short sea transportation Project, as required by section 55605(c) of Public Law 110-140, the Energy Independence and Security Act of 2007. Section 55601(d) specifically states, that ``[t]he Secretary may designate a project to be a short sea transportation project if the Secretary determines that the project mayoffer a waterborne alternative to available landside transportation services using documented vessels; and provide transportation services for passengers or freight (or both) that may reduce congestion on landside infrastructure using documented vessels.'' Further, section 55605 defines short sea transportation as meaning ``the carriage by vessel of cargo that is contained in intermodal cargo containers and loaded by crane on the vessel or loaded on the vessel by means of wheeled technology; and that is loaded at a port in the United States and unloaded either at another port in the United States or at a port in Canada located in the Great Lakes Saint Lawrence Seaway System; or loaded at a port in Canada located in the Great Lakes Saint Lawrence Seaway System and unloaded at a port in the United States.'' Section 55605(c) directs the Secretary of Transportation to promulgate interim regulations not later than 90 days after the date of enactment of this Act. The Secretary of Transportation will delegate authority to the Maritime Administrator to administer this program. Final regulations are to be issued no later than October 1, 2008. The program established in Section 55605 will be titled ``America's Marine Highway Program.'' A final regulation will be published following this public comment period. Solicitations from applicants desiring Marine Highway Project designation will be initiated through notification in the Federal Register at a future date.

We are adopting a new airworthiness directive (AD) for all Boeing Model 737-300, -400, and -500 series airplanes. This AD requires repetitive inspections for discrepancies of the fuse pins of the inboard and outboard midspar fittings of the nacelle strut, and corrective actions if necessary. This AD results from a report of corrosion damage of the chrome runout on the head side found on all four midspar fuse pins of the nacelle strut. Additionally, a large portion of the chrome plate was missing from the corroded area of the shank. We are issuing this AD to detect and correct discrepancies of the fuse pins of the inboard and outboard midspar fittings of the nacelle strut, which could result in reduced structural integrity of the fuse pins and consequent loss of the strut and separation of the engine from the airplane.

The FAA is superseding an existing airworthiness directive (AD), which applies to certain Boeing Model 737-600, -700, and -800 series airplanes. That AD currently requires repetitive inspections to detect damage of the aft strut insulation blanket, and eventual replacement of the insulation blankets with new, improved blankets. This new AD adds airplanes to the applicability and requires installation of a new heat insulation blanket and new cover plate on the left and right side engine struts. This new AD does not retain the requirements of the existing AD but does terminate the requirements of the existing AD. This AD results from reports of damaged heat insulation blankets on the engine struts. We are issuing this AD to prevent exposure of the lower surface of the strut to extreme high temperatures, consequent creation of a source of fuel ignition, and increased risk of an uncontrollable fire and possible fuel tank explosion.