Policy Statement on Acceptance of a Component Test Method To Demonstrate
The Federal Aviation Administration (FAA) announces the availability of final policy on a component method for demonstrating that a seat with a replacement bottom cushion complies with Sec. 25.562(c)(2). This policy addresses non-flotation monolithic (single layer) cushions.
Replacing Restraint Systems on Forward and Aft Facing Seats
The Federal Aviation Administration (FAA) announces the availability of final policy on Replacing Restraint Systems on Forward and Aft Facing Seats.
Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, -40 and -50 Series Airplanes, and Model DC-9-81 (MD-81), and DC-9-82 (MD-82) Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain McDonnell Douglas Model DC-9-10, -20, -30, -40 and -50 series airplanes, and Model DC-9-81 (MD-81), and DC-9-82 (MD-82) airplanes. That AD currently requires installing a water drain system for the slant pressure panels in the left and right wheel wells of the main landing gear (MLG). This proposed AD would also require inspecting the seal assemblies of the overwing emergency exit doors for defects and constant gap; replacing defective door seals; performing repetitive operational checks of the water drain system auto drain valve and corrective actions if necessary; and, for certain airplanes, modifying the insulation blankets on the slant pressure panels in the left and right MLG wheel wells. This proposed AD is prompted by reports of water runoff from the slant pressure panels in the left and right MLG wheel wells, which subsequently froze on the lateral control mixer and control cable assemblies. We are proposing this AD to prevent ice from forming on the lateral control mixer and control cable assemblies, which could reduce controllability of the airplane.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain EMBRAER Model ERJ 170 airplanes. This proposed AD would require replacing the very high frequency (VHF) antenna located in position 1 of the fuselage with a new, improved VHF antenna. This proposed AD results from a report of the loss of all voice communications due to a lightning strike damaging all the VHF antennas. We are proposing this AD to prevent the loss of voice communication, which when combined with the complexity of the national airspace system, could result in reduced flightcrew situational awareness, increased flightcrew workload, and increased risk of human error, and consequent reduced ability to maintain safe flight and landing of the airplane.