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Boeing MH-139

Multi-Mission Medium-Lift Military Helicopter

Boeing MH-139

Multi-Mission Medium-Lift Military Helicopter

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



The Boeing MH-139, built upon the framework of the Italian Leonardo AW139 helicopter, is being offered as a contender for the USAF UH-1N Huey replacement program.
National Flag Graphic
ORIGIN: United States
YEAR: 2021
STATUS: In-Development
MANUFACTURER(S): Leonardo Italy - Italy / Boeing Company - USA
PRODUCTION: 1
OPERATORS: Untied States
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the Boeing MH-139 model. Common measurements, and their respective conversions, are shown when possible.
CREW: 2
LENGTH: 54.63 feet (16.65 meters)
WIDTH: 45.28 feet (13.8 meters)
HEIGHT: 16.40 feet (5 meters)
WEIGHT (EMPTY): 8,157 pounds (3,700 kilograms)
WEIGHT (MTOW): 14,330 pounds (6,500 kilograms)
ENGINE: ESTIMATED: 2 x Pratt & Whitney Canada PT6C-67C turboshaft engines developing 1,750 horsepower each and driving a five-bladed main rotor and four-bladed tail rotor.
SPEED (MAX): 202 miles-per-hour (325 kilometers-per-hour; 175 knots)
RANGE: 808 miles (1,300 kilometers; 702 nautical miles)
CEILING: 20,341 feet (6,200 meters; 3.85 miles)
RATE-OF-CLIMB: 2,300 feet-per-minute (701 meters-per-minute)




ARMAMENT



Optional pintle-mounted machine guns along the fuselage sides as needed.
VARIANTS



Series Model Variants
• MH-139 - Base Series Designation; AW139 helicopter modified by Boeing.


HISTORY



Detailing the development and operational history of the Boeing MH-139 Multi-Mission Medium-Lift Military Helicopter.  Entry last updated on 9/25/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The MH-139 is a Boeing-modified version of the successful Italian-originated AW139 series of medium-lift helicopters produced by Leonardo. It is intended to compete in the newly-announced United States Air Force's UH-1N "Twin Huey" Replacement Program. The UH-1N (Model 212 is its civilian market equivalent) is a twin-engined model of the original Vietnam-era single-engined Huey transport / gunship. However, its design is rooted in Cold War-era doctrine which has required the series to receive regular modernizations to keep the series viable for the short-term - a long-term solution by the USAF is now sought.

The Twin Huey was debuted in 1970 and is in service with a plethora of global operators beyond the United States. The USAF uses these mounts for local security at high-level installations and as VIP transports. At any rate, replacing this proven warrior is a tall order for any interested company.

The AW139 framework promotes a robust, reliable and proven rotary-wing platform that has seen production top nearly 800 examples since series introduction occurred in 2003. Like the Twin Huey, the AW139 has been adopted by a large collection of operators around the world including several American police agencies. The Boeing offering is helped some by the fact that the Italian helicopter is already produced locally in the United States out of Philadelphia.

Outwardly, the MH-139 is a sleek offering the inherent benefits of the existing AW139 with the benefits of Boeing-installed mission equipment. The platform makes use of a two-man crew seated (side-by-side) in an all-modern, all-glass cockpit. Digital color displays dominate the two positions with a shared console in-between. Vision out-of-the-cockpit is excellent thanks to the proven AW139's design spanning over 1.7 million flight hours in various environments worldwide.

The passenger cabin is relatively spacious and features large rectangular rear-sliding doors for easy entry/exit of passengers and the high position of both the main rotor and tail rotor add safety for embarking/disembarking passengers.. There is a position between the pilot seats and passenger area to fit optional pintle-mounted armament for fire suppression by way of machine guns. These are purposely placed so as not to obstruct passenger entry/exit. The cabin can be configured for cargo or passengers as needed - seating fifteen in the latter. Over the starboard side of the fuselage (at the passenger sliding door) can also be installed a rescue hoist for Search and Rescue (SAR) sorties or a cargo winch for cargo-hauling missions. The undercarriage is wheeled at all three legs and fully retractable. The nose mounts sensor turret blister housing a FLIR Star Safire 350HDc high-definition, full-color electro-optical/IR ball.

The MH-139 makes use of a five-bladed main rotor system designed for high-performance and low-noise. It sits low along the fuselage and is mounted atop the twin-engine compartment. The engines are held in a separate engine compartment with individual access to the transmission system. The turbofans are aspirated through side-facing intakes to reduce the change of object ingestion. Furthermore, the systems are developed with inherent InfraRed (IR) reduction of which directional exhaust flow is a part of. Access to the engine units is through large, hinged panels along their sides. The tail rotor is of a four-bladed arrangement set to starboard. It is purposely fitted high atop the tail fin so as to clear ground personnel.

The MH-139 was debuted at the 2017 Andrews Air Show. It is in direct competition with Lockheed's Sikorsky UH-60U offering for the Twin Huey Replacement Program.




PROGRAM UPDATES

September 2018 - The United States Air Force has selected the Boeing MH-139 proposal as the direct replacement for its aging fleet of UH-1N Huey transports. The helicopters will be used in general transport, VIP, security, and utility roles for the service. The initial contract covers four MH-139 platforms with first deliveries scheduled for 2021 and final deliveries (of the 84 examples slated for procurement) coming in 2031. The total contract value could reach $2.38 billion USD.
MEDIA









Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 300mph
Lo: 150mph
    This entry's maximum listed speed (202mph).

    Graph average of 225 miles-per-hour.
City-to-City Ranges
NYC
 
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LDN
 
  PAR
PAR
 
  BER
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  MSK
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  TKY
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  SYD
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  LAX
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  NYC
Graph showcases the Boeing MH-139's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
1
1

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
Supported Roles
A2A
Interception
UAV
Ground Attack
CAS
Training
ASW
Anti-Ship
AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue
Supported Arsenal
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Commitments / Honors
Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.