Do you need to check for increased runway length requirements before activating the engine anti-ice protection system prior to takeoff?

Activating the engine anti-ice protection system prior to takeoff does have implications for runway length requirements. When the engine anti-ice system is engaged, it can increase engine thrust demand, resulting in a longer takeoff run. This is particularly critical in colder temperatures, where ice formation is likely to occur.

The correct answer underscores the importance of ensuring that the runway has sufficient length to accommodate any additional thrust required with the anti-ice systems engaged. This step is vital for maintaining safety during takeoff, as it reduces the risk of encountering performance issues that may arise from unexpected factors like reduced engine efficiency or loss of thrust due to ice accumulation.

Checking for increased runway length requirements is a precautionary measure that aligns with best practices in aviation safety, emphasizing that thorough pre-flight assessments are essential for a successful takeoff.