The US Air Force announced that the MH-139 Grey Wolf has achieved Initial Operational Capability (IOC), marking the transition from the service’s Vietnam-era UH-1N Huey.
The Grey Wolf features enhanced defensive systems, as well as nearly 50 percent greater speed and twice the troop-carrying capacity, positioning it for airborne security, convoy protection, and rapid response supporting the land leg of the US nuclear triad.
It will also be deployed for search and rescue, disaster response, and medical evacuations.
Preparing the Grey Wolf
The twin-engine chopper achieved IOC on August 10, according to the service’s announcement on August 31, following rigorous testing, conversion training, and operational milestones executed by the 582nd Helicopter Group (HG).
In January 2025, the 550th Helicopter Squadron conducted the MH-139’s first Initial Operational Test and Evaluation flight.
A year later, the chopper successfully escorted maintenance and armored security vehicles during the first operational Minuteman III intercontinental ballistic missile convoy, covering over 100 miles (161 kilometers) during a six-hour movement without refueling.
“The advanced capabilities of the MH-139A Grey Wolf will directly empower our airborne forces with the enhanced speed, range and survivability required to decisively defend and secure the Minuteman III weapons system,” said 582nd HG Command Col. Bryant Bevan.
MH-139 Grey Wolf
Boeing secured 38 Grey Wolf orders from the US Air Force, following the latest 4-unit order in January 2026.
The MH-139A Grey Wolf is a modified version of Leonardo’s AW139 15-seat commercial helicopter, primarily designed to protect America’s nuclear and ballistic missile facilities.
Measuring 54.8 feet (16.7 meters) long and standing 16.4 feet (5 meters) high, the chopper has a maximum takeoff weight of 15,432 pounds (7,000 kilograms).
It cruises at up to 146 knots (270 kilometers/168 miles per hour), can reach a top speed of 167 knots (309 kilometers/192 miles per hour), and has a maximum range of 410 nautical miles (472 miles/759 kilometers), with a service ceiling of 20,000 feet (6,096 meters).