EASA AD US-2022-20-14
Main Rotor Drive - Main Transmission Housing Assembly - Inspection
Airworthiness Directive 2022-20-14 is a final rule issued by the Federal Aviation Administration addressing Bell Textron Inc. helicopters including models 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, 412EP, and various restricted category helicopters. This directive mandates repetitive inspections of the main transmission housing assembly for cracks, corrosion, and pitting due to reported cracks in the main transmission support case. The directive aims to ensure continued airworthiness and safety of these helicopter models by identifying and correcting potential structural issues.