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Boeing C-17 Globemaster III

Boeing · Heavy Strategic / Tactical Transport / Strategic / Tactical Airlift · USA · Modern (1992–2009)

Boeing C-17 Globemaster III — Heavy Strategic / Tactical Transport / Strategic / Tactical Airlift
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The Boeing C-17 Globemaster III is a four-engine, T-tailed, heavy / theatre airlift aircraft developed by McDonnell Douglas (now Boeing) for the U.S. Air Force and operated by 8 nations. Designed to combine the long-range reach of the C-5 Galaxy with the short-field performance of the C-130 Hercules, the C-17 has become the backbone of U.S. and allied global lift operations from its 1995 service entry through the present.

The C-17A entered USAF service with the 17th Airlift Squadron at Charleston AFB on 17 September 1991 (first delivery; service entry / IOC was January 1995). Production ran from 1991 to 2015, with 279 airframes built (223 USAF + export). Four Pratt & Whitney F117-PW-100 turbofans (40,400 lbf each, civilianised version of the PW2040 used on the Boeing 757) provide cruise at Mach 0.74 with a maximum payload of 169,000 lb. The C-17 can land on austere 3,500-foot runways with full payload, takeoff in similar distance, and includes propulsive lift via externally-blown flaps for STOL performance — unique among heavy airlifters.

The C-17 carries a wide range of payloads: M1 Abrams main battle tanks (1 + crew + ammunition), 102 paratroopers + chutes, 36 standard 463L pallets, 134 Marines, or any mix of vehicles, equipment, and personnel up to maximum gross weight. Aerial-delivery options include LAPES (low-altitude parachute extraction), CDS (container delivery system), and high-altitude parachute drops. Two crew (pilot + co-pilot, plus loadmaster) is the minimum, with longer missions requiring augmented crews. Aerial-refuelling fit via the boom-style USAF receptacle gives the C-17 effectively unlimited range subject only to crew duty time.

The C-17 fleet has been continuously employed since 1995: Bosnia / Kosovo, Operation Enduring Freedom (Afghanistan, including the famous Kabul evacuation August 2021 with hundreds of Afghans onboard), Operation Iraqi Freedom, ongoing operations in CENTCOM and EUCOM, NATO eastern-flank reassurance, Indo-Pacific deterrence missions, and humanitarian / disaster-response missions globally. Production ended in 2015 with the final aircraft delivered to Qatar Emiri Air Force; Boeing closed the C-17 Long Beach final-assembly line. Around 270 C-17 airframes remain in active service worldwide in 2026 — USAF (216 active), RAF (8), Australia (8), Canada (5), India (11), Kuwait (2), UAE (8), Qatar (8), plus a small NATO Heavy Airlift Wing pool.

For Kids — a shorter, friendlier version

The C-17 Globemaster III is the U.S. Air Force's main cargo plane. It's huge — about 174 feet long, longer than five school buses end to end. The C-17 can carry tanks, helicopters, troops, or supplies anywhere in the world, then land on short rough runways close to the action.

Inside the C-17, the cargo area is 88 feet long and 18 feet wide — big enough to fit three Black Hawk helicopters, an M1 Abrams tank, or 102 paratroopers. A big ramp at the back drops down for loading. Vehicles drive straight in or out. The C-17 can land on dirt runways less than 3,500 feet long, while most jets need 7,000 feet or more.

The C-17 first flew in 1991. Boeing built 279 C-17s before production ended in 2015. The Air Force has 222 of them. Others fly for the UK, Australia, Canada, Qatar, the UAE, India, and NATO.

C-17s have flown in every U.S. military operation since 1995. They evacuated 124,000 people from Afghanistan in two weeks during August 2021 — the largest non-combat air evacuation ever.

C-17s also fly humanitarian missions, carrying food and supplies after earthquakes and hurricanes around the world. The C-17 will continue flying for decades — there's no replacement planned.

Fun Facts

  • The C-17 is about 174 feet long — longer than five school buses end to end.
  • Each C-17 can carry 102 paratroopers, 3 Black Hawk helicopters, or one M1 Abrams tank.
  • The C-17 can land on dirt runways less than 3,500 feet long — half what most jets need.
  • 279 C-17s were built between 1991 and 2015 — the U.S. Air Force has 222 of them.
  • C-17s evacuated 124,000 people from Afghanistan in two weeks in August 2021.
  • The C-17's back ramp drops down so trucks can drive straight in or out.
  • C-17s deliver food and supplies after earthquakes and hurricanes around the world.

Kids’ Questions

How does a huge jet land on a short dirt runway?

The C-17 has special features that let it land on short rough runways. Its wings have big extra flaps that hang down for slow landings — the plane can fly as slow as 130 mph just above stalling. Its landing gear has 14 huge tires that spread the airplane's weight (more tires = less ground pressure each) so the C-17 won't sink into dirt or mud. Its four engines can reverse thrust on the ground, slowing the plane down faster than most jets. Together these features let the C-17 stop in less than 3,500 feet — much shorter than commercial jets need.

What happened in the 2021 Afghanistan evacuation?

In August 2021, the U.S. military left Afghanistan after 20 years. As the Taliban took control of Kabul, thousands of Afghans who had helped Americans tried to flee. The U.S. Air Force used C-17s and C-130s to fly people out of Kabul Airport. In just two weeks, C-17s and other airplanes evacuated 124,000 people — the largest non-combat air evacuation in history. One famous C-17 carried 823 people in a single flight (designed for ~150) — passengers were sitting in every available space. That C-17 flight became one of the most-photographed and remembered moments of the evacuation.

Variants

C-17A Globemaster III
Standard production variant. 279 built 1991-2015. 169,000 lb maximum payload, 2,400 nm range with full payload, 6,200 nm ferry range. Used by all 8 operators.
Block 16 / 17 / 18
Block upgrades for navigation / communications / EW updates. Block 18 is the current production standard for USAF airframes.
C-17ER (proposed)
Extended-range proposal that was studied but never produced. Would have added wing-tip extensions and additional fuel tanks.
C-17 with NVIS / aeromedical fit
Special-mission configurations with night-vision-compatible cockpit lighting, aeromedical-evacuation litters, and palletised intensive-care units.
NATO SAC pool
3 C-17 airframes operated by NATO under a 12-nation pooling arrangement, based at Pápa Air Base, Hungary. Provides shared long-haul airlift access for member states without their own C-17 fleet.

Notable Operators

United States Air Force
Largest operator with 216 C-17A airframes in 2026. Based across multiple bases including Charleston, JBLM, Travis, Dover, Memphis, JBER, Hickam, JBPHH. Backbone of USAF Air Mobility Command global lift.
Royal Air Force / RAF
8 C-17 airframes since 2001. Based at RAF Brize Norton. Used for UK heavy airlift, Falklands resupply, NATO operations, and humanitarian missions.
Royal Australian Air Force
8 C-17A airframes acquired 2006-2015. Based at RAAF Amberley. Used for Australian long-haul airlift, Indo-Pacific deterrence missions, and humanitarian-disaster response across Oceania.
Other operators
Canada (5), India (11), Kuwait (2), UAE (8), Qatar (8), plus NATO SAC pooling (3 airframes). Total worldwide: ~270 C-17 in active service.

Frequently Asked Questions

What was the Kabul evacuation C-17?

On 16 August 2021, USAF C-17A Reach 871 (tail 03-3122) departed Kabul Airport during the chaotic U.S. withdrawal from Afghanistan with 823 Afghans onboard — the largest single evacuation in C-17 history and one of the largest single-aircraft evacuations on record. Footage of Afghans clinging to the C-17 as it taxied dominated international news. The C-17's combination of large internal volume, ability to operate from austere airfields, and quick turnaround was central to the evacuation's logistics.

How does the C-17 compare to the C-5 Galaxy?

The C-5 is larger (291,000 lb max payload vs the C-17's 169,000 lb) and has greater range (5,500 nm vs 2,400 with full payload). The C-17 has shorter range but can land at austere airfields with 3,500 feet of runway — the C-5 needs 6,000+ feet. The C-17 is more agile, faster to load / unload, and has higher fleet-readiness rates. The two aircraft complement each other in USAF transport operations.

How does the C-17 compare to the C-130 Hercules?

The C-130 is much smaller (45,000 lb max payload, 2,400 nm range) and is a theatre airlifter for short-runway, short-distance missions. The C-17 is much larger (169,000 lb) and is intended for long-range airlift but with C-130-class short-field landings — it can perform both roles where the C-130 cannot do long-range and the C-5 cannot do austere short fields. The C-17 effectively merges the two lift tiers in many missions, although the C-130 remains essential for the smallest theatre missions where C-17 utilisation would be wasteful.

Why was C-17 production ended?

Falling orders. The USAF programme of record was 223 airframes; once that was met, follow-on orders were limited to export sales. By 2015 Boeing had built 279 airframes total but the trickle of export orders couldn't sustain the Long Beach final-assembly line economically. Boeing closed the line in 2015. Successor airlifters (next-generation C-X programme, etc.) have been studied but no firm production decision has been made; existing C-17 airframes will fly into the 2050s.

What is the NATO SAC pool?

A 12-nation NATO pooling arrangement based at Pápa Air Base, Hungary, operating 3 C-17A airframes for shared use. Member nations include Bulgaria, Estonia, Finland, Hungary, Lithuania, Netherlands, Norway, Poland, Romania, Slovenia, Sweden, and the U.S. Each member nation has annual flight-hour entitlements; the SAC pool provides long-haul airlift to participants without their own fleet. The 3 airframes have flown over 100,000 hours since 2009 across humanitarian, military, and dual-use missions.

What replaces the C-141 Starlifter?

The C-17 Globemaster III. The Lockheed C-141 Starlifter (1965-2006) was the predecessor heavy airlifter — a four-engine T-tailed jet that the C-17 was specifically designed to replace. The C-17 has greater payload, better short-field performance, longer range, and modern avionics. Last C-141 was retired by USAF Air Mobility Command in May 2006.

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