Federal Aviation Administration May 10, 2017 – Federal Register Recent Federal Regulation Documents

These special conditions are issued for the Embraer S.A. (Embraer) Model ERJ 190-300 series airplanes. These airplanes will have novel or unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. These design features are electrical and electronic systems that perform critical functions, the loss of which could be catastrophic to the airplane. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for these design features. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

We are adopting a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB-BK117 C-2 helicopters. This AD requires inspecting the pilot collective wiring harness and was prompted by a report that the heat-shrinkable sleeve prevented the twist grip on the collective from being fully engaged during a flight test. The actions of this AD are intended to prevent an unsafe condition on these products.