Tail Rotor to Drive Shaft Connection – December 1, 1990

Do not start the engine of your helicopter with the tail rotor driveshaft connected to the transmission without having the main rotor blades installed.

Without the mass of the main rotor blades, excessive torque is applied to the tail rotor and tail rotor driveshaft systems.  Extensive damage can result, requiring expensive repairs.

Please contact factory if you have any questions.