When applying same runway separation between departures, if the succeeding aircraft is a helicopter, what type of separation may be applied in lieu of distance minima?

• A. Visual separation may be applied in lieu of using distance minima.
• B. Radar separation
• C. Time-based separation
• D. Vertical separation

Answer: (A)

Visual separation can be applied in lieu of distance minima when the following aircraft is a helicopter, provided the weather and visibility permit see-and-avoid operations. Because helicopters typically fly at lower speeds and with predictable, controllable paths, the controller can maintain safe spacing by keeping the aircraft in sight and issuing guidance to preserve separation. This approach relies on the ability of the pilot and controller to see each other and the airspace, rather than enforcing strict fixed distance gaps.

Radar separation requires surveillance data and is not the substitute described here. Time-based separation uses a set interval rather than actual spacing, which isn’t the mechanism in question. Vertical separation deals with altitude differences and doesn’t address horizontal spacing on the same runway departure.