What is the required size of a helicopter landing zone at night?

The required size of a helicopter landing zone at night is indeed 30 m × 30 m. This dimension is important because it provides sufficient space for the helicopter to maneuver safely and land without risk of obstacles or hazards. The size must account for the limited visibility conditions at night, ensuring that the pilot has enough room to navigate and position the aircraft accurately while landing. Choosing a landing zone that is too small can increase the risks of accidents or injuries to both the crew and patients being transported. The dimensions also align with best practices established by aviation guidelines for nighttime operations, emphasizing the importance of safety and efficiency in emergency medical situations.