Federal Aviation Administration August 30, 2006 – Federal Register Recent Federal Regulation Documents
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Special Conditions: West Pacific Air LLC; Raytheon Beech Model B-36TC; Protection of Electronic Flight Instrument Systems From the Effects of High Intensity Radiated Fields (HIRF)
These special conditions are issued to West Pacific Air LLC, 6427 E. Rutter Road, Spokane, WA 99212, for a Supplemental Type Certificate for the Raytheon Beech Model B-36TC airplane. This airplane will have novel and unusual design features when compared to the state of technology envisaged in the applicable airworthiness standards. These novel and unusual design features include the installation of electronic flight instrument system (EFIS) displays Model ICDS-10 manufactured by SAGEM Avionics, Inc. for which the applicable regulations do not contain adequate or appropriate airworthiness standards for the protection of these systems from the effects of high intensity radiated fields (HIRF). These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to the airworthiness standards applicable to these airplanes.
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.
Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for all McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 series airplanes. This AD requires replacing the clamp bases for the fuel vent pipe with improved clamp bases. This AD results from reports that the foil wrapping on existing plastic clamp bases has migrated out of position, which compromises the bonding of the fuel vent lines to the airplane structure. We are issuing this AD to ensure that the fuel vent lines are properly bonded to the airplane structure. Improper bonding could prevent electrical energy from a lightning strike from dissipating to the airplane structure, and create an ignition source, which could result in a fuel tank explosion.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-145XR Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain EMBRAER Model EMB-145XR airplanes. This AD requires modification of the flap system interface wiring. This AD results from a finding that the aural and visual warnings, which should be activated when the flaps are set to 22 degrees during takeoff, were not enabled during the manufacture of certain Model EMB-145XR airplanes. We are issuing this AD to prevent overrunning the runway during takeoff.
Airworthiness Directives; Pratt & Whitney JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, -17AR, -209, -217, -217A, -217C, and -219 Turbofan Engines
The FAA is superseding an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT8D-209, -217, -217A, -217C, and -219 turbofan engines. That AD currently requires initial and repetitive visual inspections for fretting and fluorescent magnetic particle inspections (FMPI) for cracking in the area of the tierod holes on 8th stage high pressure compressor (HPC) front hubs (from here on, referred to as HPC front hubs) that have operated at any time with PWA 110-21 coating. This AD requires either replacing HPC front hubs and HPC disks that have operated at any time with PWA 110-21 coating and that operated in certain engine models, or, visually inspecting and FMPI for cracking of those parts and re-plating them if they pass inspection. This AD also requires adding JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, - 11, -15, -15A, -17, -17A, -17R, and -17AR engines to the applicability. This AD results from an investigation by PW, which concluded that any HPC front hub or HPC disk coated with PWA 110-21 that ever operated on JT8D-15, -15A, -17, -17A, -17R, -17AR, -209, -217, -217A, -217C, and - 219 turbofan engines, could crack before reaching their published life limit. We are issuing this AD to prevent a rupture of an HPC front hub or an HPC disk that could result in an uncontained engine failure and damage to the airplane.
Notice of a Proposed Change in Monitor Status of Air Navigational Aids at Two Airports
The Federal Aviation Administration (FAA) is requesting public comment on a proposal to change the monitor status of air navigational aids (NAVAIDS) at two (2) airports. The NAVAIDS are currently monitored by Automated Flight Service Stations (AFSS) in Florida and Wyoming that were formerly operated by the FAA. Since October 4, 2005 these AFSS sites have been operating under a Federal Contract with Lockheed Martin Corporation. During the early stages of the contracting process, the FAA determined that monitoring of NAVAIDS was not part of the mission of flight service stations and therefore was not included in the contract. Neither of the NAVAIDS are part of a published instrument approach into an airport. The proposed time for the NAVAIDS to become unmonitored is 30 days prior to the date the respective AFSS site closes for consolidation into a Lockheed Martin FS-21 site. The Non-Directional Beacons (NDB) that are proposed to become unmonitored are: Antelope (AOP) NDB, Rock Springs, Wyoming; and Vero Beach (VEP) NDB, Vero Beach, Florida.
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