Proposed Advisory Circular (AC) 20-HIRF, The Certification of Aircraft Electrical and Electronic Systems for Operation in the High Intensity Radiated Field (HIRF) Environment
This notice announces the availability of, and requests comments on proposed Advisory Circular (AC) 20-HIRF, The Certification of Aircraft Electrical and Electronic Systems for Operation in the High Intensity Radiated Field (HIRF) Environment. This proposed AC provides information and guidance concerning an acceptable means, but not the only means, of showing compliance with the High Intensity Radiated Field (HIRF) Notice of Proposed Rulemaking (NPRM) published in the Federal Register on February 1, 2006, regarding the operation of electrical and electronic systems on an aircraft when the aircraft is exposed to an external HIRF environment.
Passenger Facility Charge Program, Debt Service, Air Carrier Bankruptcy, and Miscellaneous Changes
This action proposes to change the passenger facility charge program to add more eligible uses for revenue, protect such revenue in bankruptcy proceedings, and eliminate charges to passengers on military charters. These proposed actions respond to the Vision 100Century of Aviation Reauthorization Act. In addition, the proposed action would revise current reporting requirements to reflect technological improvements; incorporate some existing practices and policies into current regulations; and clarify and update existing references and regulations. This proposal would further streamline the existing policies of the passenger facility charge program.
High-Intensity Radiated Fields (HIRF) Protection for Aircraft Electrical and Electronic Systems
The FAA proposes to add certification standards to protect aircraft electrical and electronic systems from high-intensity radiated fields (HIRF). This action is necessary due to the vulnerability of aircraft electrical and electronic systems and the increasing use of high-power radio frequency transmitters. The intended effect of this action is to create a safer operating environment for civil aviation by protecting aircraft and their systems from the adverse effects of HIRF.
Airworthiness Directives; Rolls-Royce plc RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 turbofan engines. This AD requires initial and repetitive borescope inspections for missing HPT rear seal plate locking plugs and damaged locking plug retaining wires, and removal of the engine from service if necessary, based on inspection results. This AD results from two reports of missing HPT rear seal plate locking plugs, damage to the HPT disc, and damage to the remaining locking plug retaining wires. We are issuing this AD to prevent uncontained release of the HPT rear side plate and HPT disc, resulting in damage to the airplane.
Airworthiness Directives; Dassault Model Falcon 2000 and Falcon 2000EX Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Dassault Model Falcon 2000 and Falcon 2000EX airplanes. For all airplanes, this AD requires, among other actions, doing an inspection for damage of the feeder cables, and corrective actions if necessary; and installing a protective plate on the feeder cables. For certain airplanes, this AD also requires re-routing the wiring on the cockpit protector; drilling holes in the cockpit protector; and clamping the feeder cables; as applicable. This AD results from a drawing review and further associated inspections that highlighted a potential chafing risk between the third crew member's oxygen mask box and feeder cables routed in the area. We are issuing this AD to prevent chafing between the subject oxygen mask box and the adjacent feeder cables, which could generate smoke or fire in the cockpit that could be fanned by oxygen leakage from the oxygen mask box.