Which of the following describes a non-fatal injury in Class C Mishaps?

In the context of Class C Mishaps, the definition of a non-fatal injury focuses on the impact of that injury regarding workdays. A non-fatal injury that results in lost workdays beyond the shift indicates that the injury, while not life-threatening, still has significant consequences that hinder the individual's ability to perform their job effectively. This aligns with the criteria used to categorize Class C Mishaps, which are primarily concerned with injuries where the impact on an employee's ability to work, but without reaching the severity levels classifying it as a Class A or Class B Mishap.

The other choices identify conditions that either imply a higher severity of injury or inaccurately categorize what constitutes a Class C Mishap. An injury that requires hospitalization, for instance, would typically indicate a more severe incident that could fall under Class A or B definitions, thus not conforming to the parameters of a Class C designation. Similarly, injuries leading to permanent total disability or those resulting in 5 or more lost workdays are also indicative of more severe situations than those classified as Class C. Therefore, the distinction made in option D reflects the specific thresholds established for evaluating the impact of non-fatal injuries within the framework of aviation mishap classification.