What dimensions should a helicopter landing zone (LZ) be?

The recommended dimensions for a helicopter landing zone (LZ) are 100 feet by 100 feet. This size provides a sufficient safety margin for the helicopter's rotor wash, allowing for safe takeoffs and landings as well as adequate space for ground personnel to maneuver and operate around the helicopter.

In addition, a landing zone of this size promotes visibility and accessibility for emergency crews, ensuring that the helicopter can land in various conditions while maintaining safety for all personnel involved. This standard size is also compatible with the requirements for different types of helicopters, making it a versatile choice for various operations, including medical evacuations and fire suppression activities.

While smaller dimensions might be sufficient for smaller helicopters in ideal conditions, the standards generally recommend a larger LZ to avoid complications that could arise from unexpected circumstances. A larger area would also be necessary when accounting for factors such as wind, slope, and potential hazards in the vicinity of the landing zone.