Final answer:
Cowl flaps should be positioned open during ground operations to ensure maximum cooling airflow and prevent overheating of the engine.
Step-by-step explanation:
The question refers to cowl flaps which are adjustable panels on aircraft engines that help regulate engine temperature by controlling the amount of cooling airflow over the engine. During ground operations, it is typically recommended to position the cowl flaps in the open position to provide maximum cooling to the engine. This is because on the ground, the aircraft is not moving through the air at speed, hence airflow over the engine is reduced compared to in-flight conditions. Keeping the cowl flaps open ensures that the stationary engine does not overheat due to insufficient cooling.