How often should tactile checks be performed on applicable aircraft types?

Tactile checks should be performed every flight to ensure the aircraft is free from ice and frost accumulation. This practice is critical for maintaining safety as it allows for immediate assessment of the aircraft's surface conditions prior to takeoff. By evaluating the presence of any contaminants like ice, snow, or frost, crew members can decide on the necessary de-icing actions needed for safe operation. This frequent checking aligns with safety protocols that prioritize the thorough monitoring of aircraft surfaces, ultimately contributing to safer flying conditions.

While it may seem practical to perform checks less frequently—such as after each de-icing operation or on a schedule of weekly or monthly checks—these intervals may not adequately address the rapid changes in weather conditions and the potential for re-icing. Hence, performing tactile checks every flight is the most effective method to ensure immediate and reliable aircraft performance.