Air safety

A pilot inspects a 130 m artificial mast at the request of the infrastructure owner and flies 40 m horizontally from it. What is the maximum permitted height in this special case?

• A120 m — the Open-category altitude limit.
• B130 m — the mast height.
• C50 m — conservative altitude near obstacles.
• D145 m — mast height + 15 m extension.