Airworthiness Directives; Alpha Aviation Design Limited (Type Certificate No. A48EU Previously Held by APEX Aircraft and AVIONS PIERRE ROBIN) Model R2160 Airplanes
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued 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:
Airworthiness Directives; General Electric Company (GE) CF6-80C2 Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for GE CF6-80C2 series turbofan engines. This AD requires replacing certain installed part number (P/N) and serial number (SN) cast titanium weld- repaired forward engine mount platforms and cast titanium forward mount yokes, with a forged titanium or a non-welded cast titanium part. This AD results from the discovery of cracks, in a weld-repaired area on a forward engine mount platform and a forward engine mount yoke, found during a fluorescent penetrant inspection (FPI). These parts were weld- repaired during manufacture. We are issuing this AD to prevent cracks in the forward engine mount platform and forward engine mount yoke that could result in possible separation of the engine from the airplane.
Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Airplanes
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued 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 electrical arcing due to chafing between a bonding cable and electrical wires in the 120 VU (volt unit) electrical harness, causing the loss of some instruments and loss of one hydraulic circuit pressure (i.e., loss of pressure of one hydraulic circuit). The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.
Special Conditions: Dassault Aviation Model Falcon 7X Airplane; Sudden Engine Stoppage, Operation Without Normal Electrical Power, and Dive Speed Definition With Speed Protection System
This action proposes special conditions for the Dassault Aviation Model Falcon 7X airplane. This airplane will have novel or unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. These design features include engine size and torque load, which affect sudden engine stoppage; electrical and electronic systems which perform critical functions, which affect operation without normal electrical power; and dive speed definition with speed protection system. These proposed special conditions pertain to their effects on the structural performance of the airplane. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for these design features. These proposed 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.
Airworthiness Directives; Pratt & Whitney JT9D-7R4 Turbofan Engines
The FAA proposes to supersede an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT9D-7R4 turbofan engines. That AD currently requires inspection of the blade root thickness of 1st stage fan blades identified by part number (P/N) and serial number (SN) in the AD. This proposed AD would require the same actions but would correct 12 P/Ns, add 10 part SNs, and add the definition of next fan blade exposure to the compliance section. This proposed AD results from the discovery of inaccurate part quantity, part numbers, and serial numbers used in AD 2005-26-09. We are proposing this AD to prevent 1st stage fan blade fracture and uncontained engine failure, resulting in possible damage to the airplane.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ 190 Airplanes
The FAA is adopting a new airworthiness directive (AD) for all EMBRAER Model ERJ 170 and ERJ 190 airplanes. This AD requires repetitive detailed inspections for blockage of the pitot drain holes of certain air data smart probes (ADSPs), removing accumulated moisture from the pneumatic passages of the ADSPs, related investigative actions, and corrective actions if necessary. This AD results from reports of erroneous air speed indications caused by blockage of the pitot sensors due to freezing of accumulated moisture in the ADSP pneumatic passages. We are issuing this AD to prevent an erroneous air speed indication, which could reduce the flightcrew's ability to control the airplane.
Electronic Subscription Service for Airworthiness Directives and Special Airworthiness Information Bulletins
This notice publishes additional information about the FAA's planned transition to electronic distribution of airworthiness directives (ADs) and special airworthiness information bulletins (SAIB) through an e-mail subscription service. This notice gives more details and the schedule for the electronic distribution system, and addresses comments we received in response to Aircraft Engineering Division's previous notice about the plan. The previous notice was titled ``Printing and Distribution Changes for Airworthiness Directives and Special Airworthiness Information Bulletins'' and was published in the Federal Register on August 24, 2006.
Modification of Class E Airspace; Thedford, NE
This document confirms the effective date of the direct final rule which revises Class E airspace at Thedford, NE.
Modification of Class E Airspace; Phillipsburg, KS
This document confirms the effective date of the direct final rule which revises Class E airspace at Phillipsburg, KS.