Federal Aviation Administration September 7, 2023 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; Viking Air Limited (Type Certificate Previously Held by Bombardier Inc. and de Havilland, Inc.) Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for all Viking Air Limited (type certificate previously held by Bombardier Inc. and de Havilland, Inc.) (Viking) Model DHC-3 airplanes. This proposed AD was prompted by a report of cracking in the left-hand side (LHS) and right-hand side (RHS) lower engine mount pickup fittings. This proposed AD would require a one-time inspection of the affected parts for cracking, deformation, corrosion, fretting or wear, paint or surface coating damage, and loose, missing, or broken fasteners, and applicable corrective actions. This proposed AD would also require reporting the inspection results. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Piaggio Aviation S.p.A. Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Piaggio Aviation S.p.A. (Piaggio) Model P-180 airplanes. This proposed AD was prompted by a report of corrosion on the various aluminum alloy reinforcements in the horizontal stabilizer (HS) central box caused by a humid environment inside the box from water ingress and/or condensation. This proposed AD would require a one-time detailed inspection of the HS central box for corrosion; an assessment of the corrosion level; and depending on the determination, repetitive detailed inspections of the HS central box for corrosion and the internal composite structure for surface cracks, distortion, and damage; and repair or replacement of the HS assembly. Repair or replacement of the HS assembly would be terminating action for the repetitive inspections. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Hamilton Sundstrand Corporation Propellers
The FAA proposes to adopt a new airworthiness directive (AD) for all Hamilton Sundstrand Corporation (Hamilton Sundstrand) Model 14SF-7, 14SF-15, and 14SF-23 propellers. This proposed AD was prompted by a report of an auxiliary motor and pump failing to feather a propeller in flight. This proposed AD would require replacement of a certain auxiliary motor and pump. This proposed AD would also prohibit installation of a certain auxiliary motor and pump on any propeller. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-3 helicopters. This proposed AD was prompted by recalculations of the inspection intervals for certain parts. This proposed AD would require revising the airworthiness limitations section (ALS) of the existing helicopter maintenance manual or instructions for continued airworthiness for your helicopter and the existing approved maintenance or inspection program for your helicopter, as applicable, to reduce the inspection interval of certain parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Schempp-Hirth Flugzeugbau GmbH Gliders
The FAA is adopting a new airworthiness directive (AD) for all Schempp-Hirth Flugzeugbau GmbH (Schempp-Hirth) Model Ventus-2a and Ventus-2b gliders. This AD is prompted by reports of the uncommanded extraction of the airbrakes on one or both wings, possibly resulting in reduced control of the glider. This AD requires repetitively inspecting airbrake bell cranks and airbrake drive funnels for cracking, repetitively inspecting the clearance of the airbrake control system, and taking corrective action as necessary. This AD also requires modifying the airbrake system, which is terminating action for the repetitive inspections. The FAA is issuing this AD to address the unsafe condition on these products.
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