Final answer:
Under part 91, subpart F, it is not legal for a pilot to take off with frost adhering to the wings. Frost can disrupt airflow, reduce efficiency, and lead to ice formation during flight. Anti-icing and deicing systems like Thermawing and Thermacool can help prevent ice accumulation on aircraft wings.
Step-by-step explanation:
Under part 91, subpart F of aviation regulations, it is not legal for a pilot to take off with frost adhering to the wings.
Frost on the wings can disrupt the flow of air, impact lift, and reduce the overall efficiency of the aircraft. It can also lead to ice formation during flight, which can be dangerous. Therefore, pilots must ensure that the wings are free from frost before taking off.
There are various anti-icing and deicing systems available for aircraft, such as the Thermawing and Thermacool systems, which provide heated wing technology to prevent ice accumulation.