Self-Flying Planes Advance in Cargo and Crop
Companies are developing autonomous fixed-wing aircraft for agricultural and cargo delivery, with some already in limited commercial use.
A pilotless crop-spraying plane is flying low over a California field. The aircraft, made by start-up Pyka, is among a new wave of self-flying fixed-wing planes being developed for commercial tasks.
Russ Marotzke, a Pyka flight test engineer, says flying lower than a human pilot reduces spray drift and chemical use. The company's electric crop-sprayer has an 11.5-meter wingspan, can fly for about 35 minutes, and carries up to 300 liters of spray. About a dozen are already operating on Brazilian farms.
The Race for Autonomous Flight
While electric air taxis attract more attention, a quieter competition is underway to deploy autonomous planes. Initial targets are agricultural spraying and cargo delivery. Michael Norcia, Pyka's CEO, calls ubiquitous passenger service the holy grail, envisioning fleets carrying people along coasts.
Mykel Kochenderfer, a Stanford University autonomy expert, says self-flying planes have been slower to emerge than self-driving cars. Aircraft face stricter safety standards. He notes that the consequences for air accidents can just be so severe. Military contracts are helping propel the technology with fewer regulatory hurdles.
Current Operations and Approvals
Pyka's crop sprayer is the largest autonomous fixed-wing aircraft approved for commercial civilian use in the US, having won authorization last year. Operations are limited to defined agricultural areas and require a ground operator and visual observer. The UK has yet to approve long-term operations, though British firm Windracers seeks permission for an autonomous cargo service to Shetland and Orkney.
Proponents argue autonomous aircraft could address pilot shortages, remove people from dangerous work, improve efficiency, and cut costs. Pilots' groups are wary. The US Air Line Pilots Association calls removing pilots a serious gamble with safety. The National Agricultural Aviation Association says small uncrewed aircraft can be hard for piloted planes to see.
Differing Technical Approaches
Companies are taking different paths. Pyka and Windracers build aircraft from scratch. Others retrofit existing planes. US-based Reliable Robotics is testing its system on a Cessna 208B Grand Caravan cargo plane. Merlin Labs is applying its system to a Lockheed Martin C-130J military transport.
A major technical divide concerns the use of artificial intelligence. Reliable Robotics avoids AI, arguing it complicates certification. Merlin Labs uses an AI-centric approach, including AI-powered cameras for detecting objects. Pyka uses lidar but plans to add AI cameras. Norcia says that for figuring out that six pixels in the distance are an airplane versus some other smudge, it is perfect territory.
| Company | Approach | Key Aircraft/Application | AI Use |
|---|---|---|---|
| Pyka | Build from scratch | Crop sprayer, cargo | Plans AI cameras for detection |
| Windracers | Build from scratch | Cargo for remote areas | Not specified in source |
| Reliable Robotics | Retrofit existing | Cessna 208B Grand Caravan | Avoids AI |
| Merlin Labs | Retrofit existing | Lockheed Martin C-130J | AI-centric, including generative AI |
The Communication Challenge
Operating in shared airspace requires handling air traffic control radio instructions. Reliable Robotics uses a remote pilot on the ground. Merlin Labs plans to use generative AI trained on recorded exchanges to interpret and respond itself. Matt George, Merlin's CEO, says their problem is harder but they want to move beyond remote piloting.
Pyka's Norcia says his company is content to let others blaze the trail on shared airspace operations. Even if fully autonomous passenger flight remains distant, the technology being developed may gradually make piloted flying safer. The US pilots' association notes that would be a welcome development.
