Final answer:
An FIC, or Flight Information Centre, offers air traffic services including the exchange of crucial information on the appropriate frequency for the en-route phase of flight, ensuring flight safety and efficiency.
Step-by-step explanation:
A Flight Information Centre (FIC) provides air traffic services, which include the exchange on the appropriate frequency of information pertinent to the en-route phase of flight. These services are crucial for the safety and efficiency of airspace management and are typically accessed by pilots during longer flights or when flying in unfamiliar airspace. The purpose of the FIC is to provide pilots with real-time information such as weather updates, changes to air traffic control services, and other flight-critical data.