What is the maximum airspeed for windshield wiper operation if it fails in the non-parked position?

The maximum airspeed for windshield wiper operation if it fails in the non-parked position is 250 KIAS. This restriction is crucial because when the windshield wipers are not parked, they can be subjected to aerodynamic forces that could damage the wiper system or lead to ineffective operation. Operating at speeds higher than this limit can compromise visibility and safety, as the wipers may not be designed to withstand the airflow and pressure encountered at greater speeds. Therefore, respecting the 250 KIAS threshold ensures that the wiper mechanism operates effectively without risking its integrity during flight. This airflow limitation helps maintain operational safety by preventing potential failures and ensuring that pilots have adequate visibility during adverse weather conditions.