Federal Aviation Administration February 11, 2005 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; Pilatus Aircraft Limited Models B4- PC11, B4-PC11A, and B4-PC11AF Sailplanes
The FAA proposes to adopt a new airworthiness directive (AD) for all Pilatus Aircraft Limited (Pilatus) Models B4-PC11, B4-PC11A, and B4-PC11AF sailplanes. This proposed AD would require you to repetitively inspect the control-column support for cracks and, if any cracks are found, replace the control-column support with a new support. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. We are issuing this proposed AD to detect and correct cracks in the control-column support, which could result in failure of the support. This failure could lead to loss of the primary flight control system.
Airworthiness Directives; Bell Helicopter Textron, A Division of Textron Canada Model 222, 222B, 222U and 230 Helicopters
This amendment supersedes an existing airworthiness directive (AD) for Bell Helicopter Textron, A Division of Textron Canada (BHTC) Model 222, 222B, 222U, and 230 helicopters, that currently requires a visual check of each main rotor grip (grip) and pitch horn assembly without disassembling the main rotor hub assembly (hub assembly), and a visual inspection at specified intervals of each affected grip and pitch horn assembly for a crack using a 10-power or higher magnifying glass. If a crack is found, the existing AD requires replacing each unairworthy grip or pitch horn with an airworthy part before further flight. This amendment requires those same actions, and also requires an additional inspection of the grip and pitch horn assembly for a crack in the disassembled hub assembly, and replacing any cracked part with an airworthy part. This amendment is prompted by the determination that an additional enhanced inspection is needed to ensure the integrity of the hub assembly. The actions specified by this AD are intended to prevent failure of the grip or pitch horn and subsequent loss of control of the helicopter.
Redesignation of Mountainous Areas in Alaska
This final rule updates the designated mountainous areas in the State of Alaska. Regulations currently designating mountainous areas in Alaska were established in 1956. Since that time, we have concluded that areas previously considered non-mountainous should be expanded, and two areas previously designated mountainous should be considered non-mountainous. This final rule will allow aircraft operating in certain non-mountainous areas to fly at altitudes acceptable for the actual topography of the area.
Airworthiness Directives; Boeing Model 767-200 and -300 Series Airplanes
The FAA is superseding an existing airworthiness directive (AD), which applies to certain Boeing Model 767 series airplanes. That AD currently requires repetitive detailed and eddy current inspections of the aft pressure bulkhead for damage and cracking, and repair if necessary. This new AD also requires one-time detailed and high frequency eddy current inspections of any ``oil-can'' located on the aft pressure bulkhead, and related corrective actions if necessary. An ``oil-can'' is an area on a pressure dome web that moves when pushed from the forward side. This AD is prompted by reports of cracking at ``oil-can'' boundaries on the aft pressure bulkhead. We are issuing this AD to detect and correct fatigue cracking of the aft pressure bulkhead, which could result in rapid depressurization of the airplane and possible damage or interference with the airplane control systems that penetrate the bulkhead, and consequent loss of controllability of the airplane.
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