Text in force at CS29-12: from CS29-0, effective 14 Nov 2003.
(a) Each control sy stem m ust have stops that positively lim it the range of m otion of the pilot’s controls.
(b) Each stop m ust be located in the sy stem so that the range of travel of its control is not appreciably affected by:
(1) W ear;
(2) Slackness; or
(3) Take-up adjustments.
(c) Each stop m ust be able to withstand the loads corresponding to the design conditions for the system.
(d) For each main rotor blade:
(1) Stops that are appropriate to the blade design must be provided to lim it travel of the blade about its hinge points; and
(2) There must be m eans to keep the blade from hitting the droop stops during any operation other than starting and stopping the rotor.
ED Decision 2003/016/RM · Source