5.4
Aircraft flown in this category must be equipped with a convenient means for the operator or helper to quickly and positively shut down the various types of engine(s) used; on the ground, or in the air by radio control. For electric powered models, on modern R/C equipment, it is recommended the member program a “Throttle Cut/Arm” function on their radio transmitter (refer to Original Equipment Manual (OEM) for details). This function provides a means to help prevent accidental throttle stick movement and motor operation.