WARNING

Do not operate any propeller until you have thoroughly read and understood the following instructions and warnings!

A rotating propeller has the potential to be very dangerous and can cause personal injury. It is the responsibility of the user to be aware of this fact and to operate it with extreme care, common sense, and good practices. Inspect the prop before each use for any signs of damage or irregularity. Remove and replace any damaged or irregular prop.  Do not attempt to repair it. Be sure that it is balanced and mounted properly. Check the prop bolts often for proper security.  Do not allow a spinner to rub against the prop. Do not hand start your engine. Always remain clear of the rotating prop blades.  Never reach toward a spinning prop or allow anything or anyone to come near it while in operation. Do not adjust your engine while running. Keep people behind the plane of the prop.  Do not run the engine at high RPM in the proximity of personnel or property.  Always operate over a firm surface. Never attempt to stop the engine by throwing any object into the propeller.

Safety Brief
Servo Output Arm - internal splines
June 2006

Take care when pressing the plastic output arm onto a metal output shaft of a servo. If the mating splines are not properly aligned, the splines in the servo output arm can sustain damage.
The symptoms of damaged splines can appear similar to those of stripped servo gears.

CONTROL SURFACE FLUTTER MAY RESULT

So, if you change a servo due to suspected stripped gears, utilize a fresh servo arm as well. And, should your model experience a control surface flutter (and is still in one piece), reduce power and ease the nose up to reduce speed. Check for controllability and land ASAP.
Do not fly the model again until the cause of the flutter is determined and eliminated for certain.
NOTE: BVM uses JR plastic arms for 90% of our high performance jet applications.