Maintenance Notices

A question has been raised that may be disturbing to owners of SAFARI helicopters. We present the information that follows to assist you in determining if you should be concerned. It concerns the presence of a radius at the machined edges of the main rotor spindle and of the tail rotor spindle. There have been…

To prevent an unexpected movement of the collective in the event of failure of the spring or cable , the spring and cable provided with a Kit should be doubled. If you are using the cable and spring provided, please contact us for a second cable and spring to install on your helicopter to provide…

During start up, if the engine shuts off, do not restart the engine until the blades have spooled down to low rpm. Re-starting the engine while the clutch is still engaged can result in damage to the rotor head from the abrupt increase in force applied to the rotor head. This is a particular concern…

Note: Tail rotor assemblies are currently shipped from the factory completely balanced and ready for installation. No additional balancing is required. The information below was first provided in 1995. The tail rotor should be dynamically balanced within the first four hours of operation, with a Chadwick or equivalent electronic balancer. The blades are matched at…

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…

CHR is incorporating a seat brace that you may wish to consider. Cyclic Bearing Support: Benefit: You can expect a small decrease in vibration readings in forward flight. It has been identified that the cyclic forces coming from the swash causes this bearing support tube to flex, fore and aft, thus amplifying rather than supporting…

On older style swept tip blades, the installation of tip weights provided additional inertia to the Main Rotor. It has the effect of making auto rotation easier and slower at the bottom of the flare. The installation of weights is optional. These weights are not needed on the newer square tip blades. Click here for…