Department of Transportation September 4, 2007 – Federal Register Recent Federal Regulation Documents
Results 1 - 5 of 5
Airworthiness Directives; Honeywell International Inc. TFE731-2C, -3B, -3BR, -3C, -3CR, -3D, -3DR, -4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, and -60 Series Turbofan Engines
The FAA proposes to adopt a new airworthiness directive (AD) for Honeywell International Inc. (Honeywell) TFE731-2C, -3B, -3BR, -3C, -3CR, -3D, -3DR, -4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, and -60 series turbofan engines. This proposed AD would require removal from service of certain high pressure (HP) turbine rotor assemblies with part numbers (P/Ns) 3075772-1 and 3060841-1 using a drawdown schedule, and returning them to Honeywell for curvic root radius inspection. This proposed AD results from the manufacturer's report that some HP turbine rotor discs received improperly machined radii in the root of the forward and aft curvic teeth during manufacture. We are proposing this AD to prevent uncontained failure of the HP turbine rotor assembly and damage to the airplane.
Airworthiness Standards: Safety Analysis
The FAA is amending the safety analysis type certification standard for turbine aircraft engines. This rule establishes a nearly uniform safety analysis standard for turbine aircraft engines certified in the United States under part 33 and in European countries under the Certification Specifications for Engines, thereby simplifying airworthiness approvals for import and export.
Airworthiness Standards; Aircraft Engine Standards for Engine Life-Limited Parts
The FAA is amending the certification standards for original and amended type certificates for aircraft engines by modifying the standards for engine life-limited parts. This final rule establishes new and uniform standards for the design and testing of life-limited parts for aircraft engines certificated by the FAA and the European Aviation Safety Agency (EASA). This rule retains the current lifing requirements, introduces damage tolerance requirements into the design process, and strengthens cooperation between engineering, manufacturing, and service elements of turbine engine manufacturers. These new requirements provide an added margin of safety and will reduce the number of life-limited parts failures due to material, manufacturing, and service induced anomalies. Additionally, this action adds new standards for the design of reciprocating engine turbocharger rotors.
Environmental Impact Statement; Washoe County, NV
The FHWA is issuing this notice to advise the public that an Environmental Impact Statement (EIS) will be prepared for a proposed intersection improvement project in the City of Sparks, Washoe County, NV.
Electronically Controlled Pneumatic Brake Systems
FRA proposes revisions to the regulations governing freight power brakes and equipment by adding a new subpart addressing electronically controlled pneumatic (ECP) brake systems. The proposed regulations are designed to provide for and encourage the safe implementation and use of ECP brake system technologies. The proposal contains specific requirements relating to design, interoperability, training, inspection, testing, handling defective equipment, and periodic maintenance related to ECP brake systems. The document also identifies provisions of the existing regulations and statutes where FRA is proposing to provide flexibility to facilitate the introduction of this advanced brake system technology.
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