Federal Aviation Administration March 24, 2022 – Federal Register Recent Federal Regulation Documents

The FAA proposes to supersede Airworthiness Directive (AD) 2015-12-03, which applies to certain The Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes. AD 2015-12-03 requires repetitive freeplay inspections and lubrication of the right and left elevators, rudder, and rudder tab, and related investigative and corrective actions if necessary. Since the FAA issued AD 2015-12-03, engineering testing revealed that the force being applied to the elevator to detect excessive freeplay was insufficient. This proposed AD would continue to require certain actions in AD 2015-12-03 for certain airplanes, and would require revising the existing maintenance or inspection program, as applicable, for certain other airplanes, to incorporate a revised or new elevator freeplay maintenance procedure, as applicable. This proposed AD would also add airplanes to the applicability. The FAA is proposing this AD to address the unsafe condition on these products.

These special conditions are issued for the Dassault Aviation (Dassault) Model Falcon 6X airplane. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature is a digital systems architecture for the installation of a system with wireless and hardwired network and hosted application functionality that allows access, from sources internal to the airplane, to the airplane's internal electronic components. 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.

This action proposes to establish United States Area Navigation (RNAV) route T-377 in the vicinity of Sitka, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action proposes to amend United States Area Navigation (RNAV) route T-230 in the vicinity of St. Paul Island, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action proposes to establish United States Area Navigation (RNAV) route T-386 in the vicinity of Fairbanks, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action proposes to establish United States Area Navigation (RNAV) route T-380 in the vicinity of Emmonak, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

The FAA proposes to adopt a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-400 series airplanes. This proposed AD was prompted by reports of broken P- clamps on the pressure relief line and the motive flow line in the fuel tanks, and a subsequent determination that certain service information lacked instructions for maintaining appropriate clearance between certain fuel tubes and their support brackets, and may also have led to incorrect installation of certain TeflonTM sleeves. This proposed AD was also prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require inspecting the motive flow line, vent line, and related parts, and adding support or additional clearance if necessary. This proposed AD would also require inspection, and replacement or relocation if necessary, of affected TeflonTM sleeves on the vent line, and installation of TeflonTM sleeves on the vent line at additional wing stations. This proposed AD would also require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.

This action proposes to amend United States Area Navigation (RNAV) route T-282 in the vicinity of Ruby, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action proposes to establish United States Area Navigation (RNAV) route T-379 in the vicinity of Discovery, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.