Department of Transportation May 27, 2005 – Federal Register Recent Federal Regulation Documents

The FAA proposes to supersede an existing airworthiness directive (AD) for Rolls-Royce plc (RR) models RB211 Trent 875-17, Trent 877-17, Trent 884-17, Trent 884B-17, Trent 892-17, Trent 892B-17, and Trent 895-17 turbofan engines with low pressure (LP) compressor fan blades, part number (P/N) FW18548 installed. That AD currently requires LP compressor fan blade replacement with new or previously reworked blades, or rework of the existing LP compressor fan blades. This proposed AD would require the same actions but at reduced compliance times for certain airplane and engine rating combinations and certain maximum gross weight limits. This proposed AD results from a number of new production LP compressor blades found with surfaces formed outside of design intent. We are proposing this AD to prevent possible multiple uncontained LP compressor fan blade failure, due to cracking in the blade root caused by increased stresses in the shear key slots.

The FHWA is issuing this notice to advise the public that an environmental impact statement will be prepared for a proposed highway project in Kootenai County, Idaho.

The FAA proposes to rule and invites public comment on the application to impose and use the revenue from a PFC at Washington Dulles International Airport under the provisions of the 49 U.S.C. 40117 and Part 158 of the Federal Aviation Regulations (14 CFR part 158).

This notice announces a Federal Aviation Administration (FAA) proposed policy statement on bonded joints and structures. This notice advises the public, especially manufacturers and repair facilities for aircraft structures that the FAA intends to adopt this policy. This notice is necessary to advise the public of this FAA policy and give all interested persons an opportunity to present their views on it.

This rule establishes a Class E surface area at Chillicothe, MO. It also modifies the Class E airspace area extending upward from 700 feet above the surface at Chillicothe, MO. The effect of this rule is to provide appropriate controlled Class E airspace for aircraft department from and executing instrument approach procedures to Chillicothe Municipal Airport and to segregate aircraft using instrument approach procedures in instrument conditions from aircraft operating in visual conditions.

The FAA is requesting public comment on the Town of Barnstable, MA request to change a portion (6.94 acres) of Airport property from aeronautical use to non-aeronautical use. The property is located behind the Airport's East Ramp and adjacent to the railroad right-of-way on land located on along the former Mary Dunn Way. The land is currently a land locked vacant parcel. The parcel will be leased to the Woods Hole, Martha's Vineyard and Nantucket Steamship Authority (``Authority'') for use as a parking area during the months of July and August. During the remainder of the year, both the Authority and Airport will use the lot for overflow parking. The property was acquired under the Surplus Property Act and Airport Development Aid Projects 6-25-0025-07 and 6-25-0025-10. These lease term is for five years with three additional five-year terms. Should the land be required for airport purposes, the lease can be terminated at any time upon six month written notice to the Authority. The disposition of proceeds from the disposal of airport property will be in accordance with FAA's Policy and Procedures Concerning the Use of Airport Revenue, published in the Federal Register on February 16, 1999.

This document corrects information regarding the training course design for the repairman certificate (light-sport aircraft) discussed in the preamble of the final rule, ``Certification of Aircraft and Airmen for the Operation of Light-Sport Aircraft,'' published in the Federal Register of July 27, 2004. The regulatory text addressing this matter was correct and no correction to that text is required.

The FAA is superseding an existing airworthiness directive (AD), which applies to certain Boeing Model 767-200, -300, and -300F series airplanes. That AD currently requires inspections for fatigue cracking of the horizontal stabilizer pivot bulkhead, and repetitive inspections or other follow-on actions. That action also provides a permanent repair, which is optional for airplanes with no cracks, and, if accomplished, ends the repetitive inspections. For airplanes on which the permanent repair is not installed, this new AD requires repetitive inspections of the same and additional inspection locations at new inspection intervals; a one-time torque test; and related investigative and corrective actions. For airplanes on which the permanent repair is installed, this new AD would require repetitive inspections of the repaired area and, if necessary, corrective action. This AD is prompted by reports of loose tension bolts and crack indications in the fuselage skin. We are issuing this AD to find and fix fatigue cracking of the horizontal stabilizer pivot bulkhead and adjacent structure, which could result in loss of the horizontal stabilizer.

The FAA is adopting a new airworthiness directive (AD) for Turbomeca S.A. Arrius 1A turboshaft engines. This AD requires initial and repetitive testing of the Free Turbine Overspeed Protection System. This AD results from an investigation into the Digital Electronic Control Unit (DECU) that revealed a malfunction of the Free Turbine Overspeed Protection System. This malfunction can exist despite the DECU passing all functional tests specified in the Engine Maintenance Manual. We are issuing this AD to prevent uncontained engine failure if a free turbine overspeed occurs.