Which of the following is a signaling equipment found in the T-6?

The URT-33D Locator Beacon is a specific type of signaling equipment used in the T-6 aircraft, designed to enhance safety and facilitate rescue operations. It operates by transmitting a distress signal that can be tracked by search and rescue teams, which is critical during emergencies or forced landings. The URT-33D is especially valuable in situations where visibility is poor or when the location of the aircraft is uncertain, allowing for quicker and more efficient recovery.

In contrast, while the other options such as smoke signals, flashlights, and radio transmitters can be used for signaling purposes, they do not serve the same specific function as the URT-33D in aviation contexts. Smoke signals may not be reliable in flight due to altitude and wind conditions, flashlights have limited range and effectiveness compared to a dedicated beacon, and radio transmitters serve broader communication functions rather than specialized signaling for recovery. Thus, the URT-33D Locator Beacon stands out as the most relevant and effective signaling equipment for the T-6.