What should a pilot do if no UNICOM exists at the aerodrome they intend to land at?

When a pilot finds themselves heading to an aerodrome without a UNICOM frequency, broadcasting intentions on 123.2 MHz is an appropriate action to take. This frequency is commonly recognized as a standard for non-towered airports, where pilots can announce their position and intentions to enhance situational awareness for themselves and other pilots who might be operating in the vicinity.

By using this frequency, the pilot helps to maintain safety in the airspace, allowing other aircraft to be aware of their approach, landing, or takeoff plans. This practice is vital in preventing misunderstandings and potential accidents in environments where air traffic control is not available to provide guidance.

Waiting for clearance from ATC would not be feasible since ATC services may not be present at a non-towered aerodrome. Landing without any communication would create unnecessary risks, as other pilots in the area would be unaware of the pilot's intentions. Similarly, contacting a nearby airport for assistance is not practical if the objective is to land at the specific aerodrome that lacks UNICOM. Therefore, broadcasting on 123.2 MHz is the best course of action to ensure a safe and well-communicated landing procedure.