Which dimensions must be determined when establishing a PZ/LZ?

Which dimensions must be determined when establishing a PZ/LZ?

• A. Length and width
• B. Height and depth
• C. Diameter and radius
• D. Height and length

Answer: (A)

The main idea is sizing the landing zone in the horizontal plane. A PZ/LZ is defined by how long it is and how wide it is, because helicopters require a flat two-dimensional footprint with clear space along both the length and the width to permit safe approach, landing, and departing. Height or depth would describe vertical clearance, which isn’t how you size the usable landing area. Assuming a circular zone (diameter or radius) isn’t required here, since landing zones are often rectangular or irregular to fit terrain and routes. So, the crucial dimensions to determine are the length and the width to describe the usable footprint and ensure sufficient clearance on all sides.

The main idea is sizing the landing zone in the horizontal plane. A PZ/LZ is defined by how long it is and how wide it is, because helicopters require a flat two-dimensional footprint with clear space along both the length and the width to permit safe approach, landing, and departing. Height or depth would describe vertical clearance, which isn’t how you size the usable landing area. Assuming a circular zone (diameter or radius) isn’t required here, since landing zones are often rectangular or irregular to fit terrain and routes. So, the crucial dimensions to determine are the length and the width to describe the usable footprint and ensure sufficient clearance on all sides.