Maximum Altitude Above Ground Level

In plain language

Keep your drone below 400 feet AGL. However, if you are flying within a 400-foot horizontal radius of a structure (like a tower or building), you may fly up to 400 feet above the top of that structure.

Requirement as structured

A small unmanned aircraft must not be flown higher than 400 feet above ground level unless it is flown within a 400-foot radius of a structure and does not fly higher than 400 feet above the structure's immediate uppermost limit.

Original regulatory text

The altitude of the small unmanned aircraft cannot be higher than 400 feet above ground level, unless the small unmanned aircraft: (1) Is flown within a 400-foot radius of a structure; and (2) Does not fly higher than 400 feet above the structure's immediate uppermost limit.

Applies when

country

US

regulation

14 CFR Part 107

regulatory category

General