What is the minimum lighting required for an aerodrome movement area at night?

The minimum lighting required for an aerodrome movement area at night is a parallel row of white runway lights visible in flight at two nautical miles. This standard is established to ensure that pilots can identify and safely navigate the runway, especially during night operations or in low visibility conditions.

White runway lights serve the critical function of marking the edges of the runway, providing pilots with clear visual cues about the safe boundaries for landing and takeoff. The visibility requirement of two nautical miles allows for adequate distance perception and approach guidance, enabling pilots to approach the runway with confidence.

In contrast, other options do not meet the necessary criteria for visibility and usability. For instance, a single row of red runway lights may not provide sufficient directional guidance and visibility, while a series of flashing lights could create confusion without adequately marking the runway boundaries. A complete system of lights covering the entire runway, while comprehensive, might exceed the minimum requirement established for operational safety specifically during night operations.