The Navy’s Autonomous Refueling Drone Flew for Real. The Job It Was Built for Is Still Three Years Out.

The Navy retired its last dedicated tanker in 1996. For thirty years afterward, fighter jets refueled other fighter jets in the air — a jury-rigged workaround the service called temporary when it started, and then quietly never stopped. The unmanned autonomous refueling drone called the MQ-25A Stingray was supposed to end that arrangement. It still hasn't.

On April 25, Boeing's first production-representative MQ-25 lifted off from MidAmerica Airport in Mascoutah, Illinois, flew for two hours, and landed. The aircraft is real. The milestone is real. Combat-ready duty: 2029, per Navy budget documents reviewed by USNI News. Three years later than some earlier estimates. The gap between what the drone was supposed to do and what it can actually do is the story.

The Navy got into aerial refueling the same way it got into carriers: by solving a range problem with whatever was sitting on the flight deck. In 1921, a dimpled aluminum drop tank strapped beneath a biplane proved the concept. By the 1920s, dedicated tankers were routine. The Navy called it extending the striking arm — getting more range out of ships that couldn't get closer.

It took the Navy 75 years to give that up. In 1996, the last dedicated carrier-based tanker — the Grumman KA-6D Intruder — flew its final mission. Fighter jets would refuel each other instead. It was temporary. It wasn't.

The aircraft that took off last week was the first of four Engineering Development Model airframes, built under an $805 million contract. Nine total are being built for the flight test campaign. It is powered by a single Rolls-Royce AE 3007N turbofan engine generating 10,000 pounds of thrust, with an operational radius of 500 nautical miles. The planned fleet is 76 aircraft.

It also carries hardware the earlier T1 demonstrator did not: an integrated electro-optical and infrared turret for intelligence, surveillance, and reconnaissance, plus satellite communications. That ISR package — the sensor payload that would let the Navy use the drone for more than tanking — is not in the original specification for a buddy tanker. Whether that represents prudent evolution or premature scope creep is a question the 2029 date may not answer cleanly.

The T1 prototype, which flew from 2019 onward, logged approximately 125 flight hours. That was learning time — scripted, land-based, low-risk. The EDM aircraft are built to military operational specs: carrier-hardened landing gear for catapult launches and arrested landings, naval-grade corrosion protection for salt-spray exposure, mission bays, and operational software. Turning a demonstrator into a carrier-qualified aircraft is where most autonomous programs quietly fail. The MQ-25 has been deliberate about it. That patience is showing up as a three-year gap between the milestone and the mission.

The IOC slip is not a death sentence. The Super Hornets are still flying. The carrier air wing is still lethal. But the drone that was supposed to let them focus on being fighter jets again has just completed its first flight — and won't be assigned to the job it was built for until 2029.