Where Drones Are Already at Work

Drones are often thought of as toys or camera gadgets, but small unmanned aircraft now do real work in fields from farming to emergency medicine. They are useful wherever a job involves looking at something from above, reaching a place that is dangerous or slow to get to, or carrying something small over a short distance. Here is where they are already at work, followed by the rules anyone flying one should know.

Farming

Drones with ordinary and multispectral cameras survey crops to spot areas of disease, pest damage, uneven irrigation or nutrient problems, so farmers can treat only the parts of a field that need it. Spraying drones apply pesticides and fertilizer, especially on small or hilly fields where tractors struggle. They are particularly widespread in China and parts of Asia, and use in other countries is growing as regulations adapt.

Inspecting infrastructure

Utilities, railways and energy companies use drones to inspect power lines, wind turbine blades, bridges, pipelines, solar farms and cell towers. A drone can photograph a structure in detail without workers climbing or a helicopter flying, which is safer and often much cheaper. Thermal cameras can reveal electrical faults and leaks that are invisible to the eye.

Emergency response and search and rescue

Fire services use drones with thermal cameras to see through smoke, find hot spots and plan how to fight fires. Search and rescue teams use them to scan large or difficult terrain for missing people, including at night. Some US police departments run "drone as first responder" programs, sending a drone to an emergency call to give officers a view of the scene before they arrive, a practice that has also raised privacy questions.

Medical delivery

One of the most established delivery uses is in health care. The company Zipline began delivering blood to hospitals in Rwanda by drone in 2016 and later expanded to vaccines and medicines in Ghana and other countries, reaching clinics that could take hours to reach by road. Hospitals in several countries have tested drone delivery of lab samples between sites.

Package and food delivery

Companies including Wing, owned by Alphabet, and Amazon's Prime Air have run home delivery services in selected areas of the US and other countries. These remain limited by regulations, weather, battery range and the number of locations approved, but the services have been expanding.

Mapping, construction and surveying

Drones can photograph a site from many angles and turn the images into accurate maps and 3D models, a technique called photogrammetry. Builders use them to track progress, measure stockpiles and check work against plans. Archaeologists and environmental scientists use them to map sites, coastlines and wildlife habitats, and to count animals with less disturbance than people on foot.

Film, photography and entertainment

Aerial shots that once needed a helicopter are now routine in films, television, sports coverage, real estate listings and weddings. Coordinated drone light shows, where hundreds or even thousands of lit drones form shapes in the sky, are increasingly used at festivals and celebrations, sometimes in place of fireworks.

The rules for flying one

Rules differ by country, so always check with the national aviation authority. In the United States, the Federal Aviation Administration sets the main rules:

• Recreational flyers must pass the free online TRUST safety test and register any drone weighing more than 250 grams (0.55 pounds).
• Commercial use, including paid photography, generally requires a Remote Pilot Certificate under the FAA's Part 107 rules, which involves passing a knowledge test.
• Height and line of sight: fly no higher than 400 feet above the ground in uncontrolled airspace, and keep the drone within your visual line of sight.
• Remote ID: most registered drones must broadcast identification and location information, a requirement the FAA began enforcing in 2024.
• No-fly areas: airports, stadiums during events, national parks and emergency scenes are restricted. The FAA's B4UFLY app shows where you can fly.

In the European Union, drones are regulated by EASA rules, which generally require operators to register if their drone weighs 250 grams or more or carries a camera, with a few exceptions for toys.

Privacy and respect

Even where flying is legal, filming people in their homes or gardens may break privacy laws and will certainly annoy neighbors. Fly away from people, avoid hovering near houses, and respect wildlife, especially nesting birds.