T/F: It is acceptable to polish frost smooth using a rag or paper prior to departure.

The statement is false because polishing frost smooth using a rag or paper prior to departure is not an acceptable practice in aviation. The primary concern with removing frost in this manner is that it may not effectively remove all the frost or may damage the aircraft's surface, potentially impacting its aerodynamic properties. Additionally, using a rag or paper can introduce debris, which could lead to contamination of the aerodynamic surfaces or the fuel systems.

Proper de-icing and anti-icing procedures must be followed to ensure the safety and performance of the aircraft. These procedures typically involve the use of approved de-icing fluids, which are designed to safely and effectively remove frost, ice, or snow while preparing the aircraft for flight. Using rags or paper doesn't meet the necessary safety standards or requirements set forth by aviation authorities.