Federal Aviation Administration October 8, 2021 – Federal Register Recent Federal Regulation Documents

Airworthiness Directives; Airbus Helicopters
Document Number: 2021-21955
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to supersede Airworthiness Directive (AD) 2020-11-05, which applies to all Airbus Helicopters Model EC120B helicopters. AD 2020-11-05 requires repetitive inspections of the tail rotor (TR) hub body for cracks and applicable corrective actions if necessary, and repetitive replacement of the attachment bolts, washers, and nuts of the TR hub body. This proposed AD would retain certain requirements of AD 2020-11-05, add repetitive inspections, require additional corrective actions, and update applicable service information. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Umlaut Engineering GmbH (Previously P3 Engineering GmbH) HAFEX (Halon-Free) Hand-Held Fire Extinguishers
Document Number: 2021-21952
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain Umlaut Engineering GmbH (previously P3 Engineering GmbH) HAFEX (Halon-free) hand-held P3HAFEX fire extinguishers (fire extinguishers). This proposed AD was prompted by reports of a quality control issue on certain fire extinguishers, where the spindle geometries of the fire extinguishers were found to be out of tolerance. This proposed AD would require removing affected fire extinguishers from service. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Vulcanair S.p.A. Airplanes
Document Number: 2021-21938
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain Vulcanair S.p.A. Models P.68C, P.68C-TC, P.68 ``OBSERVER,'' P.68 OBSERVER 2, P.68R, and P.68TC OBSERVER airplanes. This proposed AD was prompted by 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 damaged stabilator trim control cable. This proposed AD would require inspecting the stabilator trim control cables and replacing if necessary. This proposed AD would also require reporting the results of each inspection to Vulcanair S.p.A. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
Document Number: 2021-21937
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-24 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 insufficient performance of the fuel drain system that could lead to fire and damage of the airplane. This proposed AD would require modifying the fuel drain pipe routing and installing a drain mast. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Stemme AG Gliders
Document Number: 2021-21934
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain Stemme AG Model Stemme S 12 gliders. This proposed AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as the incorrect installation of an axle connecting the main landing gear (MLG) to the center steel frame. This proposed AD would require inspecting the MLG installation. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; General Electric Company Turbofan Engines
Document Number: 2021-21905
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) CF34-8C and CF34-8E model turbofan engines. This proposed AD was prompted by a report of a quality escape during the manufacturing of a high-pressure turbine (HPT) rotor stage 1 disk. This proposed AD would require removing the HPT rotor stage 1 disk from service and replacing the HPT rotor stage 1 disk with a part eligible for installation. The FAA is proposing this AD to the unsafe condition on these products.
Proposed Amendment to United States Area Navigation Route (RNAV) T-227; Fairbanks, AK
Document Number: 2021-21862
Type: Proposed Rule
Date: 2021-10-08
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to amend United Stated Area Navigation (RNAV) route T-227 in the vicinity of Fairbanks, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.