How often are turnaround maintenance checks typically performed?

Turnaround maintenance checks are typically performed after every flight to ensure the aircraft is safe and ready for the next operational mission. This type of maintenance is focused on quick inspections and repairs that address any issues that may have arisen during the previous flight. Performing these checks helps to maintain operational readiness and safety, as issues can escalate if not addressed promptly. Regular turnaround maintenance is essential for detecting and fixing minor problems before they become significant, which is crucial in a high-demand environment such as aviation operations.

The other options represent maintenance schedules that do not align with the immediate and frequent nature of turnaround checks, which are designed specifically for the time between flights rather than on a fixed schedule like monthly, quarterly, or annual checks.