What is the first step in processing an airfile?

The first step in processing an airfile is to obtain the necessary information for IFR service. This is crucial because having all relevant details allows air traffic control to assess the flight, ensure safe routing, and communicate necessary safety information to the pilot. Gathering information includes understanding the flight route, the pilot's intentions, aircraft type, and any particular requests the pilot may have, all of which are essential for effectively managing IFR operations. Once this information is secured, other steps, such as issuing clearances or filing flight plans, can proceed with the context and understanding necessary for safe flight operations.