Department of Transportation March 1, 2018 – Federal Register Recent Federal Regulation Documents

NHTSA is announcing a public meeting as part of the Agency's initiative to combat drug-impaired driving on U.S. roads. NHTSA is holding this public meeting to facilitate a national dialogue on best practices, lessons learned, and to develop a call-to-action with short- , mid-, and long-term plans to address drug-impaired driving in the U.S. NHTSA is bringing together key stakeholdersincluding safety partners; state and local officials; data and policy experts; law enforcement and criminal justice professionals; toxicologists; drug recognition experts; and othersto join the DOT in setting a course of action and taking measurable steps to address drug-impaired driving. Registration information for this event will be available at www.nhtsa.gov on March 1, 2018. Attendance at the meeting is limited because of space limitations of the DOT Conference Center; however, the meeting will be available for live public viewing on the NHTSA website (www.nhtsa.gov).

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-400 series airplanes. This proposed AD was prompted by reports of arcing and smoke emanating from the windshields. This proposed AD would require a revision to the maintenance or inspection program, as applicable, to include an inspection of the windshield moisture seal for signs of cracks, erosion, wear, and other deterioration; doing that inspection and repair if necessary; and re-torqueing the windshield heater terminal lugs and applying sealant to the windshield heater screw heads. We are proposing this AD to address the unsafe condition on these products.

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. Model AB139 and Model AW139 helicopters. This AD requires inspecting the thickness of the tail gearbox (TGB) central housing (housing). This AD was prompted by reports that the housing thickness does not conform to its type design. The actions of this AD are intended to detect and correct an unsafe condition on these products.