Special Conditions: Embraer S.A., Model EMB-550 Airplane; Hydrophobic Coatings in Lieu of Windshield Wipers
These special conditions are issued for the Embraer S.A., Model EMB-550 airplane. This airplane will have a novel or unusual design feature(s) associated with hydrophobic coatings. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Notice of Intent To Rule on Request To Release Airport Property at the Dallas/Fort Worth International Airport, DFW Airport, TX
The FAA proposes to rule and invite public comment on the request for permanent easement at the Dallas/Fort Worth International Airport under the provisions of Section 125 of the Wendell H. Ford Aviation Investment Reform Act for the 21st Century (AIR 21).
Proposed Amendment of VOR Federal Airway V-595; OR
This SNPRM amends the notice of proposed rulemaking (NPRM) published on October 22, 2012 which proposed to amend VHF omnidirectional range (VOR) Federal airway V-595 in Oregon. This SNPRM proposes to remove an additional segment of the airway due to high terrain and navigation aid coverage issues.
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
We propose to supersede an existing airworthiness directive (AD) that applies to all Turbomeca S.A. Arrius Models 2B, 2B1, and 2F turboshaft engines. The existing AD currently requires replacement of injector manifolds and borescope-inspection of the flame tube and the high-pressure (HP) turbine area for possible damage. Since we issued that AD, we received a report that the corrective actions of the existing AD were insufficient to eliminate the unsafe condition. This proposed AD would require, depending on the engine model, repetitive replacements of fuel injection manifolds and the privilege injector, or, repetitive replacements of the privilege injector. We are proposing this AD to prevent an uncommanded in-flight shutdown of Arrius 2B1 and 2F turboshaft engines and damage to the helicopter.
Airworthiness Directives; Dowty Propellers Propellers
We propose to revise an existing airworthiness directive (AD) that applies to all Dowty Propellers R408/6-123-F/17 model propellers. The existing AD currently requires initial applications of sealant between the bus bar assembly and the backplate assembly of certain line-replaceable units (LRUs), and repetitive applications of sealant on all R408/6-123-F/17 model propellers. Since we issued that AD, Dowty Propellers has introduced an optional terminating action to the applications of sealant. This proposed AD would add the optional terminating action. We are proposing this AD to prevent an in-flight double generator failure, which could result in reduced controllability of the airplane.
Airworthiness Directives; Engine Alliance Turbofan Engines
We propose to adopt a new airworthiness directive (AD) for certain Engine Alliance GP7270 and GP7277 turbofan engines. This proposed AD was prompted by damage to the high-pressure compressor (HPC) stage 7-9 spool caused by failure of the baffle plate feature on affected HPC stage 6 disks. This proposed AD would require initial and repetitive borescope inspections of the baffle plate feature and removal from service of the HPC stage 6 disk before further flight, if the plate is missing material. This proposed AD would also require mandatory removal from service of these HPC stage 6 disks at the next HPC module exposure. We are proposing this AD to prevent uncontained failure of the HPC stage 7-9 spool, uncontained engine failure, and damage to the airplane.
Airworthiness Directives; Hamilton Sundstrand Corporation Propellers
We propose to adopt a new airworthiness directive (AD) for Hamilton Sundstrand Corporation 14SF-7, 14SF-15, and 14SF-23 series propellers using certain Hamilton Sundstrand Corporation auxiliary pumps and motors (auxiliary feathering pumps). This proposed AD was prompted by a report of a propeller not moving into the feathering position after an engine in-flight shutdown. This proposed AD would require removing certain serial numbers (S/Ns) of auxiliary feathering pumps from service. We are proposing this AD to prevent propellers from failing to move into the feathering position after an engine in-flight shutdown. Propellers failing to feather can cause high drag on the propeller, asymmetric thrust, and difficulty of, or impossibility in, controlling the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 series airplanes. This proposed AD was prompted by reports of auxiliary power unit (APU) faults due to power feeder cable chafing. This proposed AD would require detailed inspections for damage of the APU power feeder cables; replacing the clamps and installing grommets; and related investigative and corrective actions if necessary. We are proposing this AD to detect and correct chafing of the APU power feeder cables within a flammable fluid leakage zone, which, with arcing, could result in fire and structural damage.
Establishment of Class E Airspace; Kasigluk, AK
This action establishes Class E airspace at Kasigluk, AK, to accommodate aircraft using Area Navigation (RNAV) Global Positioning System (GPS) standard instrument approach procedures at Kasigluk Airport. This action also makes a minor adjustment to the geographic coordinates of the airport. The FAA is taking this action to enhance the safety and management of aircraft operations at the airport.
Environmental Impact and Related Procedures
This final rule makes revisions to the joint Federal Transit Administration (FTA) and Federal Highway Administration (FHWA) regulations that implement the National Environmental Policy Act (NEPA). The revisions are aimed at streamlining the FTA environmental process for transit projects, in response to the August 31, 2011, Presidential Memorandum titled ``Speeding Infrastructure Development through More Efficient and Effective Permitting and Environmental Review.'' The revisions also respond to Executive Order 13563's directive to periodically review existing regulations to determine if they can be made more effective and/or less burdensome. The new categorical exclusions (CEs) established by this rule, which affect actions by FTA and FTA grant applicants, are intended to improve the efficiency of the environmental review process by making available the least intensive form of review for those actions that typically do not have the potential for significant environmental effects, and, therefore, do not merit additional analysis and documentation associated with an environmental assessment or an environmental impact statement.