Federal Aviation Administration April 7, 2006 – Federal Register Recent Federal Regulation Documents
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Commercial Space Transportation Advisory Committee Working Group-Meeting Notice
Pursuant to Section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92-463, 5 U.S.C. App. 2), and 5 U.S.C. 552b(c), notice is hereby given of a telephone conference for the Launch Operations and Support Working Group of the Commercial Space Transportation Advisory Committee (COMSTAC). The agenda will include a report by the Working Group Chairperson, discussions on the commercial space launch programs for the National Aeronautics and Space Administration, and other updates on working group activities, and will take place on Tuesday, April 18, 2006, from 4 p.m. until 5:55 p.m., eastern daylight time. For the call-in telephone number and the passcode, contact the Contact Person listed below.
Notice of Availability of Draft Advisory Circulars, Other Policy Documents and Proposed Technical Standard Orders
The FAA's Aircraft Certification Service publishes proposed non-regulatory documents that are available for public comment on the Internet at https://www.faa.gov/aircraft/draftdocs/.
Airworthiness Directives; Aerospatiale Model ATR42 Airplanes and Model ATR72 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Aerospatiale Model ATR42 airplanes and Model ATR72 airplanes. This AD requires installing protective ramps on trim panel 110VU; and inspecting the protective guard of the standby pitch trim switch to determine if it is missing, damaged, or ineffective, and doing the corrective action if necessary. This AD results from a finding that the protective guard of the standby pitch trim switch, which is installed on the center pedestal, could be damaged or missing. We are issuing this AD to prevent inadvertent activation of the standby pitch trim, which could result in pitch trim runaway and consequent reduced controllability of the airplane.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120, -120ER, -120FC, -120QC, and -120RT Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120, -120ER, -120FC, -120QC, and -120RT airplanes. This AD requires a one- time inspection of the interior of the internal elevator torque tube of each elevator control surface for oxidation and corrosion, and corrective actions. This AD results from corrosion in torque tubes of the elevators found during scheduled maintenance. We are issuing this AD to detect and correct corrosion in the torque tubes of the elevators, which could lead to an unbalanced elevator and result in reduced controllability of the airplane.
Airworthiness Directives; Boeing Model 727, 727C, 727-100, 727-100C, and 727-200 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Boeing transport category airplanes. This AD requires determining if the terminal fittings of the spars of the wings are made of 7079 aluminum alloy material. For any positive finding, the AD requires doing repetitive inspections for cracks and corrosion of all exposed surfaces of the terminal fitting bores; doing repetitive inspections for cracks, corrosion, and other surface defects, of all exposed surfaces, including the flanges, of the terminal fitting; applying corrosion inhibiting compound to the terminal fittings; and repairing or replacing any cracked, corroded, or defective part with a new part. This AD also provides for an optional terminating action for the repetitive inspections. This AD results from reports of cracking of the terminal fittings of the spars of the wings. We are issuing this AD to detect and correct stress-corrosion cracking of the terminal fittings, which could result in the failure of one of the terminal fitting connections. Such a failure, combined with a similar failure of one of the other three terminal fittings, could result in the inability of the airplane structure to carry fail-safe loads, which could result in loss of structural integrity of the wing attachment points.
Airworthiness Directives; Bombardier Model DHC-8-400 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-400 series airplanes. This AD requires replacing all domed anchor nuts at all attachment locations of the upper fuel access panels of the center wing in the wet bay location with new nuts. This AD results from reported cases of corroded dome anchor nuts at the attachment locations of the upper surface of the fuel access panel of the center wing. We are issuing this AD to prevent corrosion or perforation of domed anchor nuts, which could result in arcing and ignition of fuel vapor in the center wing fuel tank during a lightning strike and consequent explosion of the fuel tank.
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