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Boeing CH-47 Chinook (all marks)

Boeing Vertol · Heavy Lift Helicopter · USA · Early Jet (1946–1969)

Boeing CH-47 Chinook (all marks) — Heavy Lift Helicopter
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The Boeing CH-47 Chinook is an American twin-engine, tandem-rotor heavy-lift helicopter designed by Boeing Vertol (now Boeing Rotorcraft Systems) and in continuous production from 1962 to the present — a 60+ year run that ranks the Chinook among the longest-produced helicopter types in history. Over 1,200 airframes have been built across multiple variants, with 26 nations operating the type. It is the principal Western heavy-lift helicopter and the dominant tandem-rotor military helicopter in the world.

U.S. Army service began with the CH-47A in 1962, replacing the piston-engined CH-37 Mojave. Two three-blade fully-articulated rotor systems are mounted on pylons fore and aft of the fuselage, eliminating the need for a tail rotor. Power comes from two Lycoming T55 turboshaft engines — later the Honeywell T55-714A on the CH-47F and CH-47G, rated at roughly 4,800 shp each at military rated power. Maximum gross weight on the CH-47F is 50,000 lb. The cabin accommodates 33-55 fully-equipped infantry, three HMMWVs, two M1 Abrams transmissions, an M198 howitzer with crew, or mixed artillery, vehicle and cargo loads. External sling-load capacity reaches 26,000 lb in single-point or 23,000 lb in tandem-point configuration — unmatched among Western military helicopters and the principal source of the Chinook's heavy-lift reputation.

Combat deployments have been continuous since Vietnam (1962-1975), where roughly 750 CH-47A / CH-47B / CH-47C airframes flew over 1 million sorties. Subsequent operations include the Iran hostage crisis Operation Eagle Claw (1980, in which one CH-53 collided with a refueling C-130; CH-47s were not directly involved, but the operation drove changes to U.S. military helicopter procurement), Operation Just Cause (Panama 1989), Desert Storm (1991, principal heavy-lift platform for U.S. Army XVIII Airborne Corps), the Balkans (1995-1999), Operation Enduring Freedom (Afghanistan 2001-2021, where high-altitude performance was indispensable for operations in the Hindu Kush), Operation Iraqi Freedom (2003-2011), the May 2011 raid that killed Osama bin Laden (CH-47Ds carrying Navy SEAL teams as backup to the MH-60M Stealth Black Hawks), and ongoing Indo-Pacific deterrence missions.

Major variants run from the Vietnam-era CH-47A / B / C through the CH-47D — an 1980s rebuild with composite rotor blades, T55-L-712 engines and a glass cockpit that dominated the U.S. fleet from 1980 to 2010 — to the current CH-47F with T55-714A engines, updated avionics and a 50,000 lb MTOW. The MH-47G is the special-operations variant for U.S. Army 160th SOAR. Foreign builds include the British Chinook HC.6 / HC.6A with composite rotor heads, the Italian ICH-47F with naval / SAR fit, and the Japanese CH-47J / JA. Total production exceeds 1,200 airframes; Boeing's Ridley Park, Pennsylvania facility continues to deliver 30-40 airframes per year. Roughly 850 Chinooks remain in active service worldwide in 2026.

For Kids — a shorter, friendlier version

The CH-47 Chinook is the U.S. Army's heavy-lift helicopter. It's the biggest helicopter the Army flies — twice as long as a Black Hawk, with two huge rotors on top instead of one. The Chinook can carry 33-55 soldiers, two Humvees, or a 155mm howitzer cannon hanging underneath.

The Chinook has a unique "twin-rotor" design. Two big rotors on top — one in front and one in back — both spin in opposite directions. This design lets the Chinook lift heavy things with no need for a tail rotor. Most helicopters need a tail rotor to keep the body from spinning. The Chinook's two main rotors cancel each other's spin force.

Boeing has built more than 1,200 Chinooks since 1962. The U.S. Army has about 480 — the world's largest Chinook fleet. About 20 other countries also fly Chinooks: the UK, Italy, Japan, India, Australia, Canada, and many more.

Different versions do different jobs: the CH-47F (current standard), the MH-47G (Special Operations), and the heavy CH-47ER (extended-range for very long missions).

Chinooks have served in every American war since Vietnam. They lifted artillery into combat positions, evacuated wounded soldiers, and delivered supplies behind enemy lines. In Afghanistan (2001-2021), Chinooks were the workhorse of high-altitude warfare — they could land on mountain peaks at over 15,000 feet, where lighter helicopters couldn't go. The Chinook is over 60 years old as a design but still flying — the current CH-47F is essentially a modernized version of the 1962 original.

Fun Facts

  • The CH-47 Chinook has two big rotors on top instead of one — they spin in opposite directions to cancel each other's twist.
  • The Chinook is about 52 feet long — bigger than a Black Hawk.
  • Each Chinook can carry 33-55 soldiers, two Humvees, or a 155mm artillery cannon hanging underneath.
  • Over 1,200 Chinooks have been built since 1962 — more than any other heavy-lift helicopter.
  • Chinooks can land at over 15,000 feet altitude — high enough to operate in the Afghan mountains.
  • About 20 countries fly Chinooks, including the UK, Japan, India, and Australia.
  • The Chinook design is over 60 years old, but the current CH-47F is still being built today.

Kids’ Questions

Why two rotors?

When a helicopter rotor spins, it creates a twisting force called torque. The body of the helicopter wants to spin in the opposite direction to the rotor. Most helicopters fix this with a small tail rotor that pushes sideways, canceling the twist. The Chinook does it differently: two main rotors spinning in opposite directions cancel each other's twist. The result: no tail rotor needed, AND twice as much lift power. The downside: two rotors mean more moving parts to break, and the rotors need careful coordination. The Chinook design has worked for 60+ years, so it's clearly a winning approach for heavy-lift helicopters.

Why is the Chinook good at high altitude?

At high altitudes, the air is thin — there's less air for the rotor blades to push against. Most helicopters lose power quickly as they fly higher. The Chinook has two huge rotors that together create much more lift than a single-rotor helicopter. Plus, its engines are powerful enough to keep spinning the rotors hard even in thin air. This combination lets Chinooks land at 15,000+ feet — high enough to operate in Afghan mountains where lighter helicopters can't get off the ground. The Chinook is the only American military helicopter that routinely lands in such high-altitude places.

Variants

CH-47A / B / C
Vietnam-era variants with Lycoming T55-L-7 / -7B / -11 engines and ~46,000 lb MTOW. Around 750 built across A/B/C combined; backbone of U.S. Army heavy-lift in the Vietnam War.
CH-47D
1980s rebuild with composite rotor blades, T55-L-712 engines and an updated cockpit. Roughly 474 built or converted from the C variant. Backbone of U.S. Army heavy-lift 1980-2010, used in Desert Storm, the Balkans, OEF and OIF.
CH-47F
Current production variant (2003-present) with T55-GA-714A engines, 50,000 lb MTOW, glass cockpit and integrated avionics. Over 700 built or on order. Operated by the U.S. Army, UK (Chinook HC.6 / HC.6A), Australia, Netherlands, Italy, Saudi Arabia, India, Korea, Japan and others.
MH-47G
Special-operations variant for U.S. Army 160th SOAR (Night Stalkers). Adds internal fuel, FLIR, terrain-following radar, NVG-compatible cockpit and heavy defensive armament. Around 75 in service. Used in the May 2011 bin Laden raid (Operation Neptune Spear) as backup to the Stealth Black Hawks.
CH-47K (Block II)
Future U.S. Army upgrade programme with T55-714D engines, advanced rotor system and increased payload. First flight 2017; production limited; future production may resume after the post-2030 force-modernisation review.

Notable Operators

United States Army
Largest operator with around 470 CH-47F / CH-47D in active service. Backbone of U.S. Army heavy-lift across all Combat Aviation Brigades. Operating units include the 101st Airborne Division (Air Assault), the 82nd Airborne Division and the 160th SOAR (Night Stalkers, MH-47G variant).
Royal Air Force / UK
60 Chinook HC.6 / HC.6A airframes. The Joint Helicopter Command Chinook Force operates from RAF Odiham. Used in the Falklands War (1982), Operation Granby (1991), OEF / OIF and ongoing peacekeeping operations.
Other major operators
Australia (14 CH-47F), Netherlands (~17 CH-47F), Italy (~16 CH-47F), Saudi Arabia (~38 CH-47F), India (15 CH-47F), Korea (~50 CH-47D / CH-47F), Japan (~50 CH-47J / CH-47JA), and Germany (~13 CH-47F ordered 2024). 26 operator nations in total.
Production / future
Boeing's Ridley Park, Pennsylvania facility continues to deliver 30-40 airframes per year. Outstanding orders include Germany (60 CH-47F), an additional 14 for Australia, further Indian procurement, and U.S. Army CH-47F re-manufacturing of older airframes. The CH-47K (Block II) future variant remains uncertain after the 2024 U.S. Army programme review.

Frequently Asked Questions

Why does the Chinook have two rotors?

The tandem-rotor configuration eliminates the need for a tail rotor (which absorbs roughly 10% of total engine power on conventional helicopters), delivers an excellent payload-to-power ratio, and is naturally stable in pitch with a wide centre-of-gravity envelope — cargo can shift fore-and-aft without trim issues. The two rotors counter-rotate, cancelling torque without a tail rotor. The downsides: complex ground-effect and interference between the two rotors, higher maintenance burden than single-rotor designs, and reduced manoeuvrability in some flight regimes. The trade-off has proven extremely successful for heavy-lift missions, and the Chinook remains the only large tandem-rotor military helicopter in widespread service.

How does the Chinook compare to the CH-53?

Different design philosophies. The Sikorsky CH-53E Super Stallion (and CH-53K King Stallion) is a single-rotor heavy-lift helicopter with three engines and slightly higher payload (35,000 lb internal vs the Chinook's 30,000 lb). The Chinook is twin-engine tandem-rotor with lower per-airframe payload but better operational availability rates, lower acquisition and operating costs, and a broader export base. The Chinook serves the U.S. Army; the CH-53 serves the U.S. Marine Corps and U.S. Navy (with the MH-53E variant for mine countermeasures). Both types are essential to U.S. heavy-lift capability.

What is the Chinook's role in Afghanistan?

Indispensable. The Hindu Kush produces high-altitude operating environments — LZs at 8,000-15,000 ft elevation — that severely degrade conventional helicopter performance. The Chinook's powerful T55 engines and tandem-rotor configuration allowed sustained operations at altitudes where the smaller UH-60 Black Hawk could not carry meaningful loads. The type was the principal heavy-lift platform for U.S. Army and NATO operations in Afghanistan from 2001 to 2021 — troop insertions, casualty evacuation, vehicle and artillery transport, and resupply. Heavy losses to RPG and Stinger fire occurred during the war; total Chinook losses in Afghanistan exceed 25 airframes.

How long has the Chinook been in production?

Continuously since 1962 — a 60+ year production run that ranks the Chinook among the longest-produced helicopter types in history. The original CH-47A first flew on 21 September 1961; production has continued through the CH-47B / C / D / F variants at Boeing's Ridley Park, Pennsylvania facility. Total production exceeds 1,200 airframes, with current output running at 30-40 airframes per year.

What was the Chinook used for in the bin Laden raid?

U.S. Army 160th SOAR MH-47G Chinooks served as backup transport for Operation Neptune Spear (1-2 May 2011, Abbottabad, Pakistan). Primary insertion was conducted by two MH-60M Stealth Black Hawks; one of those Stealth Black Hawks suffered a hard landing during the raid (likely related to Coandă effect from the compound walls), was damaged beyond recovery, and was destroyed by U.S. forces. The MH-47Gs were positioned for backup extraction, and the actual extraction was conducted using the remaining MH-60M and the MH-47Gs. High-altitude performance, range, and large troop and cargo capacity made the MH-47G the natural backup platform for the mission.

What is the Chinook's external load capacity?

Exceptional for a Western military helicopter. The CH-47F can sling-load 26,000 lb in single-point or 23,000 lb in tandem-point configuration — well beyond what the UH-60 Black Hawk (9,000 lb) or AH-64 Apache (no external sling capability in standard fit) can carry. Common Chinook sling loads include the M198 howitzer with ammunition (~16,000 lb), HMMWV (~8,000 lb), water buffalo trailers (~5,000 lb), and palletised cargo. The tandem-point sling allows asymmetric loads to be carried without inducing yaw or pitch instability.

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