What type of error occurs when a plan is made but an unintended action is executed?

A slip occurs when a well-intended plan is formed, but an unintended action or deviation from that plan is executed. This often happens in situations where the action is automatic or habitual, and the individual unintentionally deviates from the intended course of action. For example, a pilot may intend to pull up on the throttle but accidentally pushes it down due to a moment of distraction. Slips are typically distinguished by the presence of a correct mental plan that gets undermined by a physical action that does not align with that plan.

In the context of aviation and flight instruction, recognizing slips is important for both instructors and students. It helps in emphasizing the need for attention to detail and situational awareness during flight operations. Understanding this concept supports better decision-making and enhances safety by focusing on preventing these types of errors from occurring in the first place.