Federal Aviation Administration May 4, 2006 – Federal Register Recent Federal Regulation Documents

The FAA proposes to supersede an existing airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 650-15 turbofan engines. That AD currently establishes cyclic life limits for certain part number (P/N) stage 1 high pressure turbine (HPT) discs and stage 1 (LPT) discs operating under certain flight plan profiles. This proposed AD would add Tay 651-54 turbofan engines to the applicability. This proposed AD would also require removing certain stage 1 HPT discs and stage 1 LPT discs at reduced cyclic life limits using a drawdown schedule. This proposed AD results from RRD updating their low-cycle- fatigue (LCF) analysis for stage 1 HPT discs and stage 1 LPT discs and reducing their cyclic life limits. We are proposing this AD to prevent cracks leading to turbine disc failure, which could result in an uncontained engine failure and damage to the airplane.

On July 31, 2001, the Federal Aviation Administration (FAA), Great Lakes Region, published in the Federal Register a Notice of Intent to prepare an Environmental Impact Statement (EIS) and hold a Public Scoping Meeting at Dayton International Airport (Volume 66, Number 135, FR 36821-36822). The EIS and Public Scoping Meeting were to address proposed runway shifts and extensions to runways 6R/24L and 18/ 36 at the airport. Three public scoping meetings were held on August 14, 15, and 16, 2001. Additional workshops to discuss purpose and need were held on June 4 and 5, 2002. On March 20, 2006 the FAA received notification from the Dayton International Airport that it wished to cancel the EIS. As such, the FAA is hereby canceling the EIS process. Point of Contact: Mr. Brad Davidson, Environmental Protection Specialist, FAA Great Lakes Region, Detroit Airports District Office, 11677 South Wayne Road, Suite 107, Romulus, MI 48174 (734) 229-2900.

This action modifies the boundaries of the Restricted Area R- 3002 range complex at Fort Benning, GA. The U.S. Army requested these modifications as a result of a land exchange agreement between Fort Benning and the City of Columbus, GA. In addition, a portion of the southwest section of R-3002, within the existing restricted airspace, is redesignated as a separate restricted area, R-3002G, to better accommodate instrument approach procedures at Lawson Army Air Field (AAF). The internal boundaries between restricted area subdivisions are also realigned slightly to permit more efficient scheduling and utilization of the range complex. Finally, the names of the controlling agency and using agency for the restricted areas are changed to reflect their current titles.

This amendment establishes, amends, suspends, or revokes Standard Instrument Approach Procedures (SIAPs) and/or Weather Takeoff Minimums 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, addition of new obstacles, or changes in 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.