Boeing C-17 Globemaster III

Boeing C-17 Globemaster III
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Name	C-17 Globemaster III
Type	Strategic/tactical airlifter
Manufacturer	Boeing (McDonnell Douglas until 1997)
First flight	15 September 1991
Introduction	14 July 1993
Primary users	United States Air Force; Royal Air Force; Royal Australian Air Force; Indian Air Force
Number built	279
Status	In service

Boeing C-17 Globemaster III is a large military transport aircraft developed for the United States Air Force (USAF) from the 1980s. It was designed to fulfill demanding airlift requirements, capable of performing strategic airlift directly to forward, austere airfields in tactical situations. The aircraft is operated by several allied nations including the Royal Air Force and the Indian Air Force, and it remains a cornerstone of global military logistics.

Development and design

The C-17's origins lie in the Advanced Tactical Aircraft studies of the 1970s, which sought a replacement for the Lockheed C-141 Starlifter. The program was launched by the United States Department of Defense with McDonnell Douglas winning the development contract in 1981. Key design goals included the ability to operate from short, unprepared runways while carrying oversized cargo, a capability demonstrated by the Antonov An-124 Ruslan but desired in a smaller, more flexible airframe. The aircraft incorporates four powerful Pratt & Whitney F117-PW-100 turbofan engines, derived from the commercial Pratt & Whitney PW2000, and a advanced wing design for exceptional slow-speed maneuverability. Its design allows for in-flight refueling and features a rear loading ramp that can accommodate large vehicles like the M1 Abrams tank. The first prototype, designated T-1, made its maiden flight from Long Beach, California in 1991.

Operational history

Entering service with the United States Air Force's 437th Airlift Wing at Charleston Air Force Base in 1993, the C-17 quickly became the workhorse of American global mobility. Its first major operational deployment was during Operation Joint Endeavor, airlifting peacekeeping forces into the former Yugoslavia. The aircraft has been pivotal in every major U.S. military engagement since, including Operation Enduring Freedom in Afghanistan and Operation Iraqi Freedom. Beyond combat, it has been extensively used for humanitarian aid missions, such as disaster relief after the 2004 Indian Ocean earthquake and tsunami and the 2010 Haiti earthquake. The Royal Air Force operates the C-17 as part of No. 99 Squadron RAF out of RAF Brize Norton, while the Royal Australian Air Force's fleet based at RAAF Base Amberley has supported operations across the Asia-Pacific region.

Variants

The primary production model is the C-17A, which constitutes the vast majority of the fleet for all operators. The United States Air Force also operates a specialized medical evacuation configuration, often referred to as the "AE" role, which can be rapidly configured with patient support pallets. A single aircraft was modified into the C-17B prototype with enhanced short takeoff and landing capabilities, but this variant was not produced. The Boeing company also used a demonstrator aircraft, known as the C-17 Globemaster III Extended Range, to test aerodynamic improvements. No major structural or engine variants have entered serial production beyond the baseline C-17A.

Operators

The largest operator is the United States Air Force, with its fleet managed by Air Mobility Command. International operators include the Royal Air Force of the United Kingdom, the Royal Australian Air Force, the Canadian Armed Forces (designated CC-177), and the Qatar Emiri Air Force. The Indian Air Force acquired its fleet through a Foreign Military Sales agreement with the United States. The NATO Heavy Airlift Wing, based at Pápa Air Base in Hungary, operates three aircraft shared by several member nations. The final production aircraft were delivered to the Kuwait Air Force.

Specifications (C-17A)

* **Crew:** 3 (2 pilots, 1 loadmaster) * **Length:** 174 ft (53 m) * **Wingspan:** 169.8 ft (51.75 m) * **Height:** 55.1 ft (16.8 m) * **Empty weight:** 282,500 lb (128,100 kg) * **Max takeoff weight:** 585,000 lb (265,350 kg) * **Powerplant:** 4 × Pratt & Whitney F117-PW-100 turbofans * **Maximum speed:** Mach 0.74 * **Range:** 2,420 nmi (2,785 mi, 4,482 km) with 160,000 lb payload * **Service ceiling:** 45,000 ft (13,716 m) * **Capacity:** 102 paratroopers or 134 passengers

Accidents and incidents

The C-17 has an exceptional safety record with very few hull-loss accidents. In September 2010, a Royal Australian Air Force C-17A, tail number A41-206, overshot the runway at Amberley during a training exercise, resulting in substantial damage but no fatalities. A notable incident involving the United States Air Force occurred in 2015 when a C-17 from the 62nd Airlift Wing skidded off a runway at Joint Base Elmendorf-Richardson in Alaska. In 2022, a Qatar Emiri Air Force C-17 made a high-speed rejected takeoff at Hamad International Airport, causing a tire fire. There have been no combat losses of the aircraft type.

Category:Military transport aircraft of the United States Category:Boeing aircraft Category:Four-engined jet aircraft