Federal Aviation Administration April 22, 2008 – Federal Register Recent Federal Regulation Documents
Results 1 - 7 of 7
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V; Croman Corporation Model SH-3H, Carson Helicopters, Inc. Model S-61L; Glacier Helicopter Model CH-3E; Robinson AirCrane, Inc. Model CH-3E, CH-3C, HH-3C and HH-3E; and Siller Helicopters Model CH-3E and SH-3A Helicopters
This amendment proposes superseding an existing airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S- 61A, D, E, L, N, NM, R, and V helicopters. The existing AD currently requires determining whether the main rotor shaft (MRS) was used in repetitive external lift (REL) operations. The existing AD also requires a nondestructive inspection (NDI) for cracks, replacing any unairworthy MRS with an airworthy MRS, appropriately marking the MRS, making a logbook entry, and establishing retirement lives for each REL MRS. This proposed AD would contain some of the same requirements but would determine new retirement lives for each MRS. The REL retirement life would be based on hours time-in-service (TIS) or lift cycles, whichever occurs first. The Non-REL retirement life would be reduced and would only be based on hours TIS. This proposed AD would also require the operator to remove from service any MRS with oversized dowel pin bores. Also, certain restricted category models that were inadvertently omitted in the current AD would be added to the applicability. This proposed AD is prompted by the manufacturer's reevaluation of the retirement life for the MRS based on torque, ground-air-ground (GAG) cycle, and fatigue testing. The actions specified by the proposed AD are intended to prevent MRS structural failure, loss of power to the main rotor, and subsequent loss of control of the helicopter.
Airworthiness Directives; Eurocopter France Model AS332 C, L, L1, and L2 Helicopters
We propose to adopt a new airworthiness directive (AD) for the specified Eurocopter France (ECF) model helicopters. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The aviation authority of France, with which we have a bilateral agreement, states in the MCAI:
Notice Before Waiver With Respect to Land at Lonesome Pine Airport, Wise, VA
The FAA is publishing notice of proposed release of approximately 27.07 acres of land at the Lonesome Pine Airport, Wise, Virginia to Wise County (Portions of Property Map Parcels 4, 5, 6). The release of land will provide a location for a regional business & technology park and an emergency services training facility. Releasing the land does not adversely impact the Airport and the land is not needed for airport development as shown on the Airport Layout Plan. Fair Market Value of the land has been assessed and will be provided to The Cumberlands Airport Commission for Airport and Commission development expenses.
Airworthiness Directives; McDonnell Douglas Model DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; Model DC-8-50 Series Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-60 Series Airplanes; Model DC-8-60F Series Airplanes; Model DC-8-70 Series Airplanes; and Model DC-8-70F Series Airplanes
We are adopting a new airworthiness directive (AD) for all McDonnell Douglas airplanes identified above. This AD requires revising the FAA-approved maintenance program to incorporate new airworthiness limitations for fuel tank systems to satisfy Special Federal Aviation Regulation No. 88 requirements. This AD results from a design review of the fuel tank systems. We are issuing this AD to prevent the potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
Airworthiness Directives; Boeing Model 747-400 Series Airplanes
The FAA is revising an existing airworthiness directive (AD) that applies to certain Boeing Model 747-400 series airplanes. That AD currently requires inspecting the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support, and performing corrective action if necessary. This new AD retains all the requirements of the existing AD and expands the applicability of the existing AD to include certain airplanes that are not on the U.S. Register. This AD results from a report indicating that certain oxygen cylinder supports may not have been properly heat- treated. We are issuing this AD to prevent failure of the oxygen cylinder support under the most critical flight load conditions, which could cause the oxygen cylinder to come loose and leak oxygen. Leakage of oxygen could result in oxygen being unavailable for the flightcrew or could result in a fire hazard in the vicinity of the leakage.
Airworthiness Directives; Boeing Model 747 Airplanes
We are adopting a new airworthiness directive (AD) for certain Boeing Model 747 airplanes. This AD requires inspecting the trunnion fork assembly of the wing landing gears to determine the part number and serial number and to determine the category of the trunnion fork assemblies. For certain airplanes, this AD also requires, if necessary, various inspections to detect discrepancies of the trunnion fork assemblies, related investigative/corrective actions, and a terminating action. This AD results from a report of a fractured trunnion fork assembly. We are issuing this AD to prevent a fractured trunnion fork assembly, which could result in the collapse of a wing landing gear on the ground and possible damage to hydraulic equipment and the aileron and spoiler cables. Such damage could result in reduced controllability of the airplane.
Airworthiness Directives; Alpha Aviation Design Limited (Type Certificate No. A48EU Previously Held by APEX Aircraft and AVIONS PIERRE ROBIN) Model R2160 Airplanes
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
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