What is hold over time?

What is hold over time?

• A. The time allowed for planning de-icing
• B. The duration of de-icing fluid effectiveness in the air
• C. The time within which takeoff must occur after de-icing
• D. The time to perform engine start

Answer: (C)

Holdover time is the window after de-icing/anti-icing has been completed during which the aircraft is still protected from ice, snow, or frost before takeoff. It depends on the type of fluid used and environmental conditions (temperature, precipitation type and rate, wind, etc.). If you delay takeoff beyond this time, the protection may no longer be guaranteed and a re-application could be required. This is not about how long the fluid lasts in the air, nor the engine start time, nor planning time for de-icing.

Holdover time is the window after de-icing/anti-icing has been completed during which the aircraft is still protected from ice, snow, or frost before takeoff. It depends on the type of fluid used and environmental conditions (temperature, precipitation type and rate, wind, etc.). If you delay takeoff beyond this time, the protection may no longer be guaranteed and a re-application could be required. This is not about how long the fluid lasts in the air, nor the engine start time, nor planning time for de-icing.