Historic Preservation, Advisory Council July 14, 2015 – Federal Register Recent Federal Regulation Documents
Results 1 - 5 of 5
Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes
We propose to adopt a new airworthiness directive (AD) for PILATUS AIRCRAFT LTD. Model PC-12, PC-12/45, and PC-12/47E airplanes. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated 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 a malfunction of the universal joint. We are issuing this proposed AD to require actions to address the unsafe condition on these products.
Airworthiness Directives; Airbus Airplanes
We propose to supersede Airworthiness Directive (AD) 2009-18- 15 for all Airbus Model A300, A310, and A300 B4-600, B4-600R, and F4- 600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). AD 2009-18-15 currently requires revising the Airworthiness Limitations section (ALS) of the Instructions for Continued Airworthiness (ICA) to require additional life limits and/or replacements for certain main landing gear and nose landing gear components. Since we issued AD 2009-18-15, we have determined that existing maintenance requirements and airworthiness limitations are inadequate to ensure the structural integrity of the airplane. This proposed AD would require revising the maintenance or inspection program to incorporate new maintenance requirements and airworthiness limitations. We are proposing this AD to prevent failure of certain system components, which could result in reduced structural integrity of the airplane.
Airworthiness Directives; Airbus Helicopters
We propose to adopt a new airworthiness directive (AD) for Airbus Helicopters Model AS332C1, AS332L1, AS332L2, EC225LP, AS-365N2, AS 365 N3, EC 155B, and EC155B1 helicopters with an energy absorbing seat (seat). This proposed AD would require inspecting for the presence of labels that prohibit stowing anything under the seat. If a label is missing or not clearly visible to each occupant, installing a label would be required. This proposed AD is prompted by the discovery that required labels had not been systematically installed. The proposed actions are intended to prevent objects from being stowed under the seat as these objects could reduce the energy-absorbing function of the seat, resulting in injury to the seat occupants during an accident.
Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines
We are adopting a new airworthiness directive (AD) for certain serial number GE Aviation Czech s.r.o. M601E-11, M601E-11A, and M601F turboprop engines. This AD requires inspection of the reduction gearbox and supporting cone. This AD was prompted by the determination that wear or cracking, and subsequent misalignment of the quill shaft of the engine and the power turbine (PT) shaft, may lead to rupture of the quill shaft, overspeed of the PT, and uncontained engine failure. We are issuing this AD to prevent misalignment and rupture of the quill shaft, which could lead to overspeed of the PT, uncontained engine failure, and damage to the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of fatigue cracks found in the upper corners of the forward entry door skin cutout. This AD requires repetitive inspections for cracking in the upper corners of the forward entry door skin cutout, and repair if necessary. Accomplishment of this repair or a preventive modification terminates the repetitive inspections. We are issuing this AD to detect and correct cracking in the doorway upper corners, which could result in cabin depressurization.
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