What procedure is used specifically between flights?

The correct choice is the Thru-flight inspection. This procedure is specifically designed to ensure that an aircraft remains airworthy between flights, particularly during short turnaround situations. Thru-flight inspections typically involve a visual examination of the aircraft to check for any issues that may have arisen during the previous flight, such as damage, leaks, or any other anomalies that could affect safety.

This type of inspection is crucial as it helps to identify any maintenance requirements or repairs needed before the aircraft is cleared for the next flight. By focusing on the condition of the aircraft in between flights, the Thru-flight inspection supports operational efficiency and safety, allowing aircraft to be quickly and safely prepared for continued service.