Federal Aviation Administration March 14, 2006 – Federal Register Recent Federal Regulation Documents
Results 1 - 6 of 6
Airworthiness Directives; Bombardier Model BD-100-1A10 Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier Model BD-100-1A10 airplanes. This proposed AD would require an inspection for signs of arcing or heat damage of the electrical connections of the terminal blocks, ground studs, and the end of the wires and surrounding insulation for the windshield and side window anti-ice systems; and repairing any arced or damaged electrical connection. This proposed AD also would require re-torquing electrical connections of the terminal blocks and ground studs for the windshield and side window anti-ice systems. This proposed AD results from an in- service incident involving smoke and odor in the cockpit. We are proposing this AD to prevent loose electrical connections that could arc and overheat, and cause wiring damage of the windshield and side window anti-ice systems. Such wiring damage could result in smoke and/ or fire in the flight compartment.
Airworthiness Directives; McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes
This document revises an earlier proposed airworthiness directive (AD), applicable to certain McDonnell Douglas airplane models, that would have required a one-time inspection for chafing or signs of arcing of the wire bundle for the auxiliary hydraulic pump, and other specified and corrective actions, as applicable. This new action revises the proposed rule by proposing that certain airplanes be required to install additional protective sleeving on the upper portion of the auxiliary hydraulic pump wire assembly. The proposed AD results from reports of shorted wires and evidence of arcing on the power cables of the auxiliary hydraulic pump, as well as fuel system reviews conducted by the manufacturer. We are proposing this AD to prevent shorted wires or arcing at the auxiliary hydraulic pump, which could result in loss of auxiliary hydraulic power, or a fire in the wheel well of the airplane. The proposed actions are also intended to reduce the potential of an ignition source adjacent to the fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) EMB-120() Airplane Models in Operation
The FAA proposes to adopt a new airworthiness directive (AD) for all Empresa Brasileira de Aeronautica S.A. (EMBRAER) EMB-120() airplane models in operation. This proposed AD would require replacing the protective tubes and conduits of the wiring harnesses of the refueling vent and pilot valves with non-conductive hoses; modifying the harness wiring and supports; and rerouting the harnesses to prevent interference with adjacent strobe light connectors; as applicable. This proposed AD results from a fuel system review conducted by the manufacturer. We are proposing this AD to prevent a potential source of ignition near a fuel tank, which, in combination with flammable fuel vapors, could result in a fuel tank explosion.
Airworthiness Directives; Boeing Model 747-400 and 747-400D Series Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747-400 and 747-400D series airplanes. This proposed AD would require replacing specified tie rods of the center overhead stowage bins. This proposed AD results from manufacturer analysis of the overhead storage bin support structure that demonstrated that the capability of certain existing tie rods does not meet emergency landing load requirements. We are proposing this AD to prevent disintegration or detachment of the center overhead stowage bins during an extreme forward load event, which could cause injury to passengers and hinder emergency evacuation procedures.
Airworthiness Directives; Boeing Model 747 Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747 airplanes. This proposed AD would require repetitive mid- and low-frequency eddy current inspections for cracks in the overlapped skin panels in the fuselage skin lap joints in sections 41, 42, 44, and 46, and corrective actions if necessary. This proposed AD is prompted by a report indicating that an operator found multiple small cracks in the overlapped skin panels in the fuselage skin lap joints. We are proposing this AD to detect and correct cracks in the overlapped skin panels, which could join together and result in reduced structural capability in the skin and consequent rapid decompression of the airplane.
Airworthiness Directives; Eurocopter France Model EC 155B and B1 Helicopters
This amendment adopts a new airworthiness directive (AD) for the specified Eurocopter France (ECF) model helicopters that requires inspecting an electrical cable bundle for wear. If wear is present, the AD requires installing an airworthy cable bundle and modifying the routing of the electrical cable bundles. This amendment is prompted by reports of a short circuit in the wiring, which led to failure of the normal and emergency landing gear operation modes. The actions specified by this AD are intended to prevent interference of the wiring with the structure resulting in an electrical short circuit, failure of the landing gear to extend, and an emergency landing.
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