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MH-139A Grey Wolf
Photo: Staff Sgt. Cesar Rivas, Wyoming National Guard · Wikimedia Commons · Public domain
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MH-139AGreyWolf

Utility / Transport Helicopters · United States · 2024
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MH-139AGreyWolf

MH-139A Grey Wolf
MH-139A Grey Wolf Photo: Staff Sgt. Cesar Rivas, Wyoming National Guard · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Payload / Capacity
75
Range
70
Versatility
85
Reliability
80
Speed
70
Survivability
75
Hot-and-High Performance
80
Maintainability
70
Technology
90
Cost-Effectiveness
65
Origin United States
CategoryUtility / Transport Helicopters
EraModern Era
In service2024
Operators1 countries
Data Quality81%
76
Utility / Transport Helicopters MASS Rating
5/14
Modern Era
30/208
All-Time
Utility / Transport Helicopters · 10 axes scored
Payload / Capacity
75
Range
70
Versatility
85
Reliability
80
Speed
70
Survivability
75
Hot-and-High Performance
80
Maintainability
70
Technology
90
Cost-Effectiveness
65
ⓘ Regardless of era, the same scoring system applies to all units in the utility / transport helicopters category.
01 / Overview
MH-139A Grey Wolf
Production
2024–
Unit Price (current)
$3.1B↗ 28% inflation · 2018→2025
Original Price
$2.4B (2018)
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
UTILITY / TRANSPORT HELICOPTERS · MODERN ERA
5
PERFORMANCE/PRICE
60
UNIT COST (2025 USD)
$3.1B
Original: $2.4B (2018)
Inflation: +%28
76
utility / transport helicopters category
ⓘ Performance/Price and MASS score are computed across all units in the utility / transport helicopters category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • First Flight2019
  • Service Entry Year2020
  • Crew2
  • Passengers12
  • Primary RoleSecurity patrols, search and rescue, personnel and cargo transport, aircrew survival training
  • In ServiceYes
◈Powerplant8MOD.8
  • Engine TypePratt & Whitney Canada PT6C-67C
  • Number of Engines2
  • Engine Power (each)1,398 kW
  • Transmission Rating2,535 kW
  • Rotor ConfigurationSingle main rotor with tail rotor
  • Main Rotor Diameter13.8 m
  • Main Rotor Blades5
  • Anti-Torque TypeTail rotor
▣Performance10MOD.10
  • Top Speed310 km/h
  • Cruise Speed270 km/h
  • Never-Exceed Speed (VNE)310 km/h
  • Service Ceiling6,096 m
  • Hover Ceiling (IGE)3,048 m
  • Hover Ceiling (OGE)2,438 m
  • Range1,000 km
  • Ferry Range1,400 km
  • Rate of Climb10.2 m/s
  • Endurance240
◇Dimensions & Weights7MOD.7
  • Fuselage Length16.65 m
  • Height4.98 m
  • Rotor Disc Area149.57
  • Empty Weight3,900 kg
  • Max Takeoff Weight6,450 kg
  • Useful Load2,550 kg
  • Cabin Volume6.7
◆Armament & Mission8MOD.8
▲Production2MOD.2
  • Total Built36
  • Variants1
◎Service History2MOD.2
  • Production Start2018
  • Operational StatusIn service, in production
03 / History
SERVICE LIFESPANStill in Service
  1. 2024Production started
2
years in service
1
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE10terms
Autopilot/AFCS (Automatic Flight Control System) is an avionics suite that automatically controls a helicopter’s attitude, navigation and flight path, providing stability augmentation and reducing pilot workload.
Chaff/Flare: Countermeasures deployed by attack helicopters to disrupt radar- or heat-seeking missiles by creating false targets or decoys.
Armored protective panels installed in the cockpit area of an attack helicopter to shield the crew from small arms fire and shrapnel.
Seats designed to absorb crash forces, reducing injury to occupants.
Combined forward-looking infrared (FLIR) and electro-optical (EO) sensor turret for target acquisition and tracking, typically mounted on aircraft or ground vehicles.
A glass cockpit is an aircraft cockpit featuring electronic instrument displays, typically LCD or CRT screens, replacing traditional analog gauges.
A helmet-mounted system that projects flight, targeting, and sensor data directly into a pilot's field of view.
Electronic receiver system that detects and identifies radar signals, alerting aircraft to potential threats for defensive countermeasures.
A mechanical device used to lift personnel or cargo via a cable, typically mounted on helicopters for rescue or recovery operations.
A radar system used to detect and track precipitation, storm intensity, and wind patterns to assist in flight operations and mission planning.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Utility / Transport Helicopters entry →