Lago do Robertinho Airport is a small general aviation facility located in the Boa Vista area of Roraima state, northern Brazil. It operates under the ICAO designator SNA3 and has no assigned IATA code, indicating it does not serve scheduled commercial airline traffic. The airfield primarily supports private, agricultural, and light aircraft operations typical of remote Amazonian region airstrips. Detailed operational and infrastructure information is limited due to its small size and local-use nature.