A landing zone (LZ) is a prepared or designated area where a vertical take-off and landing aircraft — most commonly a helicopter — can safely land or take off. LZs may be permanent, like a rooftop helipad or small heliport, or temporary and improvised for short-term operations. The term is widely used in military and emergency contexts but applies equally to civilian and commercial aviation where vertical lift is involved.

Key characteristics

  • Cleared touchdown area: space free of people, debris and loose objects that could become hazards during rotor wash.
  • Approach and departure paths: unobstructed routes to allow safe ascent and descent.
  • Perimeter and safety zone: controlled buffer around the LZ to protect ground personnel and equipment.
  • Surface and slope: a stable, sufficiently level surface appropriate to the aircraft type.
  • Marking and lighting: daytime markings and night-vision-compatible lighting where required.

Those preparing an LZ consider wind, obstacles such as trees and power lines, local population, and the size and weight class of the aircraft. Radio communications and coordination with flight crews are essential for a safe operation.

History and common contexts

The concept of a landing zone grew with the rise of rotary-wing aviation in the mid-20th century. Military doctrine often used temporary LZs for troop insertions, evacuations and resupply during war and peacekeeping operations. Over time the same principles were adapted for civilian search-and-rescue, medical evacuation and offshore transfer work.

Typical uses and examples

Landing zones are used for:

  1. Medical evacuations from accident scenes or disaster areas.
  2. Search and rescue extractions from remote terrain.
  3. Firefighting and aerial logistics in rugged environments.
  4. Offshore oil and windfarm transfers to vessels or platforms.
  5. Military air mobility and casualty evacuation under tactical conditions.

Urban LZs may be established on rooftops or cleared lots; shipborne operations use designated flight decks with additional safety procedures.

Safety, distinctions and notable facts

Operators distinguish between a "hot" LZ — where the landing area is not secured and hazards or hostile activity may be present — and a "cold" LZ, which is secure and controlled. A landing zone differs from a helipad or heliport in that it can be temporary and minimally prepared rather than a permanent, certified facility. Planning, briefing, signage, and appropriate lighting are universal safety measures, and environmental impact and local regulation often shape how an LZ is sited and used.