Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC-12/45 airplanes. This proposed AD would require you to inspect the left and right main landing gear (MLG) assemblies for any part number (P/N) 532.10.12.077 bolts that do not have white primed and painted heads; and replace any bolt found with new P/N 532.10.12.077F bolts in all MLG assemblies. 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 any P/N 532.10.12.077 bolts that do not have white primed and painted heads, which could result in corrosion of the bolt and consequent failure of the bolt. This failure could lead to MLG collapse during airplane landing and take-off operations with consequent loss of airplane control.
Proposed Establishment of Class E3 Airspace; Riverside March Field, CA
This notice proposes to establish Class E3 airspace at Riverside March Field, CA. Class E3 airspace is necessary to contain and protect circling maneuvers for Category E aircraft executing these maneuvers in conjunction with Standard Instrument Approach Procedures (SIAPs) at the airport. This action would establish Class E3 airspace extending upward from the surface to, but not including, the base of the overlying Class C airspace area.
IFR Altitudes; Miscellaneous Amendments
This amendment adopts miscellaneous amendments to the required IFR (instrument flight rules) altitudes and changeover points for certain Federal airways, jet routes, or direct routes for which a minimum or maximum en route authorized IFR altitude is prescribed. This regulatory action is needed because of changes occurring in the National Airspace System. These changes are designed to provide for the safe and efficient use of the navigable airspace under instrument conditions in the affected areas.
Notice of Intent To Prepare an Environmental Impact Statement (EIS)
The Federal Aviation Administration (FAA), in cooperation with the National Park Service (NPS), began development of an Air Tour Management Plan (ATMP) and associated Environmental Assessment (EA) for Hawai'i Volcanoes National Park in February 2003. The ATMP is being established pursuant to the National Parks Air Tour Management Act of 2000 (Pub. L. 106-181) and its implementing regulations contained in Title 14, Code of Federal Regulations, Part 136, National Parks Air Tour Management. The objective of the ATMP is to develop acceptable and effective measures to mitigate or prevent the significant adverse impacts, if any, of commercial air tour operations upon the natural resources, cultural resources, and visitor experiences of Hawai'i Volcanoes National Park. The FAA and NPS have now decided to proceed with development of an Environmental Impact Statement (EIS) for this project. This decision is based on information received through the EA scoping process, the environmental analysis completed by the Agencies to date, the consideration of preliminary ATMP alternatives, and through consultations conducted pursuant to Section 106 of the National Historic Preservation Act. By this notice the FAA and NPS are initiating a 30-day scoping period for this EIS. The FAA and NPS are now inviting the public, agencies, and other interested parties to provide written comments, suggestions, and input regarding the scope of issues and the identification of significant issues to be addressed in the Environmental Impact Statement (EIS). Comments previously submitted in response to the EA scoping will not need to be resubmitted, as they will be considered as part of the EIS process and record. No additional scoping meetings are scheduled.
Airworthiness Directives; Boeing Model 747-200B, 747-300, 747-400, and 747-400D Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747-200B, 747-300, 747-400, and 747-400D series airplanes. This AD requires modifying the lateral shear beam for the Door 5 crew rest and, for certain airplanes, replacing Zone E tie rods and modifying the Zone E stowbin ladder. This AD results from a report indicating that the lateral shear beam for the Door 5 crew rest does not meet the 9G forward loading requirement. We are issuing this AD to prevent the structural support for the Door 5 crew rest and Zone E stowbins from failing, which could result in the crew rest or stowbins falling during an emergency and consequent injury to crew and passengers.
Airworthiness Directives; Bombardier Model DHC-7-100, DHC-7-101, DHC-7-102, and DHC-7-103 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-7-100, DHC-7-101, DHC-7-102, and DHC-7-103 airplanes. This AD requires revising the Airworthiness Limitations section of the Instructions of Continued Airworthiness to include a new, lower life limit for lower wing skins. This AD results from the discovery that, during the manufacture of the lower wing skins, score marks may have been accidentally inscribed around the edge of the lower wing skin doublers. We are issuing this AD to prevent fatigue cracks from developing at the score marks in the lower wing skins, which could result in the structural failure of the wing.
Airworthiness Directives; Raytheon Model HS.125 Series 700A Airplanes, Model BAe.125 Series 800A Airplanes, and Model Hawker 800 and Hawker 800XP Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Raytheon Model HS.125 series 700A airplanes, Model BAe.125 series 800A airplanes, and Model Hawker 800 and Hawker 800XP airplanes. This AD requires inspecting to determine the current rating of the circuit breakers of certain cockpit ventilation and avionics cooling system blowers; and replacing the circuit breakers and modifying the blower wiring, as applicable. This AD results from a report indicating that a blower motor seized up and gave off smoke. We are issuing this AD to prevent smoke and fumes in the cockpit in the event that a blower motor seizes and overheats due to excessive current draw.