What is the first step in an effective de-icing procedure?

The first step in an effective de-icing procedure is to conduct a thorough pre-flight inspection of the aircraft. This inspection is critical because it allows the crew to assess the extent of any ice, frost, or contamination present on the aircraft's surfaces. By understanding the current state of the aircraft, they can determine the necessary steps for de-icing and ensure that all critical areas are addressed.

Additionally, a pre-flight inspection helps identify any other potential issues that could affect the flight, ensuring a comprehensive approach to safety. It sets the stage for the de-icing process by ensuring that all systems are functioning properly and that the de-icing techniques applied will be most effective based on the conditions observed.