Which suffix denotes a transponder equipped aircraft with no Mode C that is only TACAN capable?

The suffix that denotes a transponder equipped aircraft with no Mode C capability that is only capable of TACAN is indeed denoted by the letter "N." In aviation, the suffixes used to describe aircraft capabilities provide valuable information to air traffic control personnel and other pilots regarding the equipment and capabilities of the aircraft.

In this context, an aircraft equipped with a transponder is necessary for visibility on radar, but if it has no Mode C, it indicates that the aircraft does not provide altitude information. The designation "N" is used to specify that the aircraft has a transponder but lacks the additional capability provided by Mode C, while still indicating that it may use TACAN for navigation purposes.

Understanding these suffixes is crucial for efficient air traffic management, as they help ensure that all parties involved are aware of any limitations or specific functionalities of the aircraft operating in their airspace.