Federal Aviation Administration March 1, 2018 – Federal Register Recent Federal Regulation Documents

We propose to supersede Airworthiness Directive (AD) 2017-01- 07, which applies to all Dassault Aviation Model FAN JET FALCON airplanes, FAN JET FALCON SERIES C, D, E, F, and G airplanes; Model MYSTERE-FALCON 200 airplanes; Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes; and MYSTERE-FALCON 50 airplanes. AD 2017-01-07 requires a functional test or check of the main entry door closure and warning system, and applicable door closing inspections, adjustments, operational tests, and corrective actions if necessary. Since we issued AD 2017-01-07, we have determined that the required actions must be repetitively performed to ensure continued safety. This proposed AD would require repetitive door closing inspections, adjustments, operational tests, and corrective actions if necessary. 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.