What is the requirement for a tactile pre-takeoff contamination check?

The requirement for a tactile pre-takeoff contamination check emphasizes the need to ensure that any residual contaminants, such as ice, snow, or frost, have been adequately addressed. Conducting this check after deicing and/or anti-icing treatments is crucial because it verifies that the surfaces of the aircraft are sufficiently clear and safe for takeoff.

After deicing or anti-icing, contaminants can still be present due to temperature fluctuations or if the operation was not entirely effective. Therefore, the tactile check acts as a critical final verification step to ensure safety and compliance with aviation standards before takeoff.

In comparison, while clear conditions might enhance visibility for conducting checks, they are not a strict requirement. The use of Type I fluid does not exempt the aircraft from needing a tactile check since it is still possible that contaminants may remain. Finally, a pre-takeoff check is essential regardless of weather conditions, as safety protocols are designed to prevent any potential problems that could arise from inadequate checks.