Final answer:
Class II tower facilities provide advisory services to pilots.
Step-by-step explanation:
Class II tower facilities provide advisory services to pilots. They assist pilots with relevant information and instructions to ensure safe and efficient air traffic operations. This includes providing weather updates, runway conditions, and traffic information. Control service to aircraft and en route radar service are typically provided by Class I tower facilities, while maintenance service for facilities is the responsibility of maintenance personnel and not specific to tower facilities.