How often should SAFDIE or CLEAR checks be performed during cruising?

During cruising, performing SAFDIE or CLEAR checks every 10-15 minutes is essential for ensuring safety and maintaining situational awareness. These checks involve assessing critical elements of flight, such as the aircraft's attitude, altitude, airspeed, and navigation. Regularly conducting these checks within this timeframe allows pilots to identify any deviations from expected performance, abnormalities, or changes in flight conditions promptly.

This frequency strikes a balance between being vigilant and not overly fixated on the instruments, allowing the crew to maintain effective communication and collaboration while monitoring the flight path. This approach enhances safety margins and ensures that any necessary corrective actions can be taken in a timely manner to avert potential issues or hazards.