Department of Transportation April 4, 2006 – Federal Register Recent Federal Regulation Documents
Results 1 - 9 of 9
Airworthiness Directives; Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 Series Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 series airplanes. This proposed AD would require repetitive inspections of the fluorescent light tube assemblies of the cabin, lavatory, and sidewall, and corrective actions if necessary. This proposed AD would also provide for optional terminating action for the repetitive inspections. This proposed AD results from reports of overheating due to arcing between the fluorescent tube pins and the lamp holder contacts. The tubes had not been properly seated during installation. We are proposing this AD to prevent fumes, traces of visible smoke, and fire at the fluorescent light tube assembly.
Airworthiness Directives; Boeing Model 757 Airplanes
The FAA is revising an earlier proposed airworthiness directive (AD) for certain Boeing Model 757 airplanes. The original NPRM would have required, for certain airplanes, reworking the spar bonding path and reapplying sealant; and, for certain other airplanes, testing the electrical bond between the engine fuel feed hose and the wing front spar and, if applicable, reworking the spar bonding path and reapplying sealant. The original NPRM also would have required, for all airplanes, an inspection to ensure the electrical bonding jumper is installed between the engine fuel feed tube and the adjacent wing station. The original NPRM resulted from fuel system reviews conducted by the manufacturer. This action revises the original NPRM by requiring operators that may have installed an incorrect O-ring to install the correct part and do a re-test. We are proposing this supplemental NPRM to prevent arcing or sparking at the interface between the bulkhead fittings of the engine fuel feed tube and the front spar during a lightning strike, which could provide a possible ignition source for the fuel vapor inside the fuel tank and result in a fuel tank explosion.
Airworthiness Directives; Airbus Model A300 B2 and A300 B4 Series Airplanes; Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model A300 C4-605R Variant F Airplanes (Collectively Called A300-600 Series Airplanes); and A310-200 and -300 Series Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus airplanes identified above. This proposed AD would require improving the routing of certain electrical wire bundles in certain airplane zones, as applicable to the airplane model. This proposed AD results from fuel system reviews conducted by the manufacturer. We are proposing this AD to reduce the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
Denial of Motor Vehicle Defect Petition
This notice sets forth the reasons for the denial of a petition submitted by Mr. Brad Lamb, Executive Director, North Carolina Consumers Council (NCCC) to NHTSA's Office of Defects Investigation (ODI). The petition was received on December 2, 2005. The petitioner requests, pursuant to 49 U.S.C. 30162, that the agency commence a proceeding to determine the existence of a defect related to motor vehicle safety with respect to the performance of the head lamp assemblies on model year (MY) 2004 Pontiac Grand Prix vehicles. After a review of the petition and other information, NHTSA has concluded that further expenditure of the agency's resources on the issue raised by the petition does not appear to be warranted. The agency has accordingly denied the petition. The petition is herein after identified as DP05-010.
Airworthiness Directives; Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) Series Airplanes
The FAA is adopting a new airworthiness directive (AD) to supersede AD 2003-07-01, which applies to certain Thrush Aircraft, Inc. Model 600 S2D and S2R (S-2R) series airplanes (type certificate previously held by Quality Aerospace, Inc. and Ayres Corporation). AD 2003-07-01 currently requires you to repetitively inspect the \1/4\- inch and \5/16\-inch bolt hole areas on the lower wing spar caps for fatigue cracking; replace or repair any lower wing spar cap where fatigue cracking is found; and report any fatigue cracking found. This AD is the result of the analysis of data from 112 cracks found in the last 8 years on similar design Model 600 S2D and S2R (S-2R) series airplanes, and FAA's determination that an immediate initial inspection and more frequent repetitive inspections are necessary to address the unsafe condition for certain airplanes. Consequently, this AD would require you to increase the frequency of the repetitive inspections on Groups 1, 2, 3, and 6 airplanes; and decrease the hours time-in-service (TIS) for the initial inspection on Group 2 airplanes. We are issuing this AD to prevent lower wing spar cap failure caused by undetected fatigue cracks. Such failure could result in loss of a wing with consequent loss of airplane control.
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