NTSB Issues Recommendation A-17-009 to Airbus Helicopters Regarding AS350 Hydraulic Systems

The National Transportation Safety Board (NTSB) has issued a safety recommendation, designated as A-17-009, addressed directly to Airbus Helicopters. This directive, identified by NTSB reference number CEN15MA290, focuses on the safety protocols for newly manufactured dual-hydraulic AS350-series helicopters. The core of the recommendation requires the manufacturer to assess and implement necessary changes to the dual hydraulic system architecture. These modifications are intended to serve two primary safety objectives: ensuring that pedal control hydraulic assistance functions reliably under all operational conditions, and mitigating the possibility of pilot error during any checks of the hydraulic system. By addressing these specific mechanical and procedural vulnerabilities, the NTSB aims to prevent potential incidents related to hydraulic failure or operator mistake in this helicopter model.