Which equipment suffix signifies an aircraft that has a transponder with no Mode C but has DME?

The equipment suffix that signifies an aircraft with a transponder that does not have Mode C but is equipped with DME (Distance Measuring Equipment) is indicated by the suffix /B. This designation is part of the standardized equipment codes used to inform air traffic control about the capabilities of the aircraft.

By using the /B suffix, it clearly communicates that while the aircraft has a transponder, it is not capable of providing altitude information (which is the role of Mode C). The presence of DME allows it to receive distance information from ground stations, which is important for navigation and position reporting. This distinction is vital as it helps air traffic controllers plan and execute safe separation and guidance of the aircraft in the airspace.

Understanding these equipment suffixes helps ensure effective communication about an aircraft's capabilities, enhancing overall safety in non-radar environments.