Transport i infrastruktura · 25/10/2013
Bell Helicopter Textron, Inc. Issues Superseding Airworthiness Directive for Bell Model 412, 412CF, and 412EP Helicopters
Bell is revising an existing airworthiness directive for its Model 412, 412CF, and 412EP helicopters to reduce the retirement life of certain main rotor yokes due to fatigue analysis findings.