In FDIO abbreviations, what does RAL stand for?

• A. Rapid Access Level
• B. Requested Altitude
• C. Route Assignment Level
• D. Radar Altitude Limit

Answer: (B)

In FDIO terminology, RAL represents the altitude the aircraft has requested to fly. This is the target altitude that the pilot asks the controller to assign, or the altitude the controller notes as the proposed target for a segment. The idea is to capture the intended altitude for coordination, descent, or climb so that sequencing and separation can be managed effectively.

The other options don’t fit typical FDIO shorthand: a term like Rapid Access Level isn’t a standard ATC/FDIO phrase, Route Assignment Level would pertain to routing rather than altitude, and Radar Altitude Limit would refer to a height derived from radar, not the pilot’s or controller’s requested altitude.