The anti-icing fluid protecting film can wear off and reduce considerably the holdover time:

Question

Question ATPL - Airline Transport Pilot license - Operational Procedures

QuizVDS · Accepted Answer

During strong winds or as a result of the other aircraft engines jet blast.

QuizVDS · Answer

When the aeroplane is parked facing into wind.

QuizVDS · Answer

When the temperature of the aeroplane skin is close to 0 °

QuizVDS · Answer

When the outside temperature is close to 0 °

Id 135 - ATPL - The anti-icing fluid protecting film can wear off and reduce considerably the holdover time: