How can a pilot ensure that de-icing was performed correctly?

A pilot can ensure that de-icing was performed correctly by visually inspecting the aircraft. This method allows the pilot to confirm that there are no residual ice, snow, or frost present on critical surfaces such as wings, control surfaces, and the tail. A thorough visual inspection is essential, as it provides direct evidence of the effectiveness of the de-icing process.

While weather reports can provide important context about expected conditions, they do not confirm the current status of the aircraft. A de-icing checklist is useful for ensuring that all necessary steps have been followed during the de-icing process, but it still requires visual confirmation for validation. Asking ground personnel for confirmation may provide reassurance, but ultimately, the pilot's own inspection is the most reliable method to ensure safety and operational readiness. This direct assessment by the pilot helps minimize risks associated with ice contamination, enabling them to make informed decisions before takeoff.