Which procedure should be followed when operating into an airport without a control tower?

When operating into an airport without a control tower, the correct procedure is to use MULTICOM frequency 122.9 MHz for self-announcement. This frequency is specifically designated for pilots operating at non-towered airports to communicate their intentions to other aircraft in the vicinity. Self-announcing on this frequency helps maintain situational awareness among all pilots flying in and out of the airport, enabling them to coordinate their movements and avoid potential collisions.

This practice is essential because, unlike controlled airports where air traffic controllers manage aircraft movements, pilots at non-towered airports must rely on mutual awareness and communication. Broadcasting intentions such as "landing," "taking off," or "taxiing," provides crucial information to others in the area, enhancing overall safety.

Other options, while they may seem relevant, do not align with standard procedures for non-towered airfields. Contacting a military base is unnecessary unless there’s specific coordination or a separate reason for such contact. Flying at a higher altitude may not necessarily improve safety at non-towered fields, and while standard IFR reporting procedures are important in controlled airspace, they do not apply to operations at uncontrolled airports. Therefore, utilizing the MULTICOM frequency establishes the best practice for safe operations in this context.