What is holdover time?

What is holdover time?

• A. The length of time that anti-icing fluid will prevent ice and snow from adhering to treated surfaces.
• B. The time required for the de-icing fluid to run off.
• C. The time after application until flight.
• D. The time to reapply the fluid.

Answer: (C)

Holdover time is the period after anti-icing fluid has been applied during which the protective layer remains effective in preventing ice and snow from adhering to the aircraft surfaces. It ends when the aircraft is ready to depart (the flight is about to take off), meaning you must depart or reapply if that time is reached or conditions worsen. This is why the holdover time is described as the time from application until flight. The duration depends on the fluid type and current conditions, and is often checked against holdover time charts.

Holdover time is the period after anti-icing fluid has been applied during which the protective layer remains effective in preventing ice and snow from adhering to the aircraft surfaces. It ends when the aircraft is ready to depart (the flight is about to take off), meaning you must depart or reapply if that time is reached or conditions worsen. This is why the holdover time is described as the time from application until flight. The duration depends on the fluid type and current conditions, and is often checked against holdover time charts.