CS-VLA 33 Propeller speed and pitch limits

• ED Decision 2003/18/RM found in: CS-VLA Amdt 1 - Very Light Aeroplanes (Mar 2009)

CS-VLA 33 Propeller speed and pitch limits ED Decision 2003/18/RM (a) Propeller speed and pitch must be limited to values that ensure safe operation under normal operating conditions. (b) Propellers that cannot be controlled in flight must meet the following requirements: (1) During take-off and initial climb at VY, the propeller must limit the engine rotational speed at full throttle to a value not greater than the maximum allowable take-off rotational speed, and (2) During a glide at VNE with throttle closed or the engine inoperative, provided this has no detrimental effect on the engine, the propeller must not permit the engine to achieve a rotational speed greater than 110% of the maximum continuous speed. (c) A propeller that can be controlled in flight but does not have constant speed controls must be so designed that - (1) Sub-paragraph (b)(1) is met with the lowest possible pitch selected, and (2) Sub-paragraph (b)(2) is met with the highest possible pitch selected. (d) A controllable pitch propeller with constant speed controls must comply with the following requirements: (1) With the governor in operation, there must be a means to limit the maximum engine rotational speed to the maximum allowable take-off speed, and (2) With the governor inoperative, there must be a means to limit the maximum engine rotational speed to 103% of the maximum allowable take-off speed with the propeller blades at the lowest possible pitch and the aeroplane stationary with no wind at full throttle position.