Regulation & law · 18/09/2001

Enstrom Helicopter Corporation Proposes New Airworthiness Directive for TH-28 and 480 Helicopters

The Enstrom Helicopter Corporation is proposing a new airworthiness directive for its Model TH-28 and 480 helicopters, requiring the establishment of a life limit for certain main rotor hub plates and replacement of those plates after 5000 hours of service. This proposal aims to prevent hub plate failure and subsequent loss of control of the helicopter.