When in the traffic pattern with a radio failure, what should a pilot do on final?

When a pilot experiences a radio failure while in the traffic pattern, signaling their presence and intention to land becomes crucial. Flashing the landing light serves as a visual indication to anyone observing, particularly the control tower personnel or other aircraft, that the pilot is committed to landing. This action helps communicate to others in the area that the aircraft is approaching the runway, promoting safety and awareness during the landing process.

Choosing to flash the landing light allows the pilot to maintain standard operating procedures even without radio communication. The other options do not effectively convey the pilot's intentions or may lead to misunderstanding or confusion in the absence of radio contact. For instance, stopping at the threshold could be problematic if it obstructs the runway and could lead to a hazardous situation. Crossing the runway without clear communication might also cause conflicts with other aircraft. While a go-around might seem appropriate in certain circumstances, it would not adequately address the immediate need to convey their approach to the landing, making flashing the landing light the most effective response.