In light freezing drizzle, when is it safe to take off after holdover time has expired?

In light freezing drizzle conditions, safety is of utmost importance due to the potential for ice accumulation on the aircraft's wings and control surfaces. When holdover time has expired, it indicates that the anti-icing fluid used to prevent ice formation is no longer effective. Therefore, it is crucial to ensure that the aircraft is adequately de-iced and safe for takeoff.

Taking off without proper de-icing procedures can lead to dangerous situations, including loss of control during flight due to ice accumulation. Since light freezing drizzle can lead to hazardous conditions, airlines do not permit takeoff until the aircraft has been verified to be free of ice and adequately prepared to handle the weather conditions.

In this context, waiting until safe conditions can adequately support takeoff is essential, reinforcing the necessity for strict adherence to safety protocols. Hence, it is appropriate not to take off after holdover time has expired in these conditions.