Final answer:
The statement in question is false because most modern aircraft are equipped with a stick shaker cutout switch or circuit breaker, allowing the flight crew to deactivate an inadvertently activated stick shaker while in-flight, improving safety by effectively managing equipment malfunctions.
Step-by-step explanation:
The statement that if one stick shaker activates inadvertently (stick shaker failure), nothing can be done in-flight and that it must be on the ground to activate the shaker cutout feature is false. In most aircraft equipped with a stick shaker system, there is a procedure for the flight crew to deactivate or cut out the malfunctioning stick shaker while in-flight. Typically, modern commercial aircraft have a stick shaker cutout switch or circuit breaker that can be accessed by the crew to stop the erroneous warnings and prevent potential distractions or confusion that could arise due to the continuous shaking of the control column.Aircraft stick shaker systems are important as they provide a physical alert to the pilots that the aircraft is approaching a stall condition. Although the procedure to deactivate a malfunctioning stick shaker might differ slightly among different aircraft types, the general capability to silence an inadvertent stick shaker alert without needing to be on the ground is available in most modern airplanes. This allows for safer operations by enabling the crew to manage equipment malfunctions effectively during flight.