What is the minimum ATU landing zone size?

• A. 80x80
• B. 100x100
• C. 120x120
• D. 140x140

Answer: (B)

When a helicopter lands, you must create a clear, unobstructed space big enough for the rotor system, the fuselage, and a safe approach and departure path. For ATU operations, the standard minimum is 100 by 100 feet. This size provides enough room for the rotor diameter and tail rotor, plus a margin to account for wind gusts, rotor wash, and any small obstacles in the vicinity. A zone of 80 by 80 feet is generally too tight for most aircraft and wind conditions, while 120 by 120 or 140 by 140 feet exceed the minimum and are only necessary if obstacles or winds require extra space. So, 100 by 100 feet is the baseline that balances safety with practical site size.