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Helicopter

United States

Boeing

MH-139 Grey Wolf

A twin-engine medium-lift utility helicopter adapted by Boeing from the Leonardo AW139 for the U.S. Air Force, replacing the UH-1N Twin Huey. It is used primarily to guard intercontinental ballistic missile fields and for continuity-of-government and VIP transport.

In service since 2020 · 1 operator countries

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-05

325

km/h

1,300

km range

6,200

m ceiling

Procurement snapshot

Availability & export

US ITAR-controlled

Export needs U.S. State Dept (DDTC) approval; end-use & re-transfer restrictions apply.

Channel: Foreign Military Sales (FMS) or Direct Commercial Sale

Fielded & proven

Limited · 1 operator

In service since 2020. Status: active.

Lifecycle cost (est.)

No public unit price to model from.

Interoperability

No standardised NATO calibre / datalink detected in public specs.

Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Full specifications

Performance

Speed, range, altitude and engagement capability.

Max speed Maximum level speed. For aircraft this is at optimal altitude; for ground vehicles, top road speed. Higher means faster response and better kinematic performance.: 325 km/h

Stronger than 89% of helicopters
Range Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence.: 1,300 km

Top 7% of helicopters
Service ceiling Maximum operating altitude. Higher gives energy advantage and sensor horizon.: 6,200 m

Stronger than 88% of helicopters

Physical

Dimensions, weight and crew.

Length Overall length including gun/probe where applicable.: 16.65 m
Height Overall height. Lower profile is harder to spot and hit for ground vehicles.: 5 m
Empty weight Weight without fuel, ammunition or crew.: 3,700 kg
Combat weight Fully loaded weight. Lighter eases transport and bridging limits; heavier often means more armor.: 6,500 kg
Crew Personnel required to operate. Fewer reduces exposure; autoloaders trade a loader for mechanical complexity.: 2

Propulsion

Engine, power and fuel.

Engine Powerplant model and type.: 2x Pratt & Whitney Canada PT6C-67C turboshafts
Engines Number of engines. Twin-engine gives redundancy at higher cost.: 2
Engine power Engine output power. Higher moves more weight faster.: 1,750 hp

Stronger than 46% of helicopters
Propulsion type Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet…: Turboshaft

Program

Cost, production scale and operators.

Operator countries Number of countries operating the system. More operators means broader support ecosystem.: 1

Stronger than 18% of helicopters

Specifications compiled from public Boeing and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-05.

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