Military Transport Aircraft
Using Service (US):
Air Force (USAF)
No more new aircraft planned (for USAF).
C–17 Globemaster III is a wide-body military transport aircraft in service with the U.S. Air Force and six international customers.
The C-17 is named Globemaster "III" after the legacy Douglas C-74 Globemaster and Douglas C-124 Globemaster II.
Boeing assembles the C-17 at the company's Long Beach, California plant.
The C-17 is capable of airlifting outsized and oversized payloads over intercontinental ranges with
or without in-flight refueling. The C-17 is powered by four Pratt & Whitney
turbofan engines, each providing 40,440 pounds of thrust. The F117 is the military designation for the commercial PW2040 used on the Boeing 757.
The capabilities of the C-17 include rapid direct delivery of forces by airland or airdrop into difficult tactical environments. The C–17 is capable of performing both inter-theater and intra-theater airlift missions. The C-17 is the only aircraft capable of routine delivery of outsize cargo (tanks, helicopters, etc.) to short, austere airfields. Carrying a payload of 164,900 pounds, the C-17 can take off from a 7,000-foot runway, fly 2,800 miles (4,500 km), and land on small austere airfields as short as 3,000 feet. The C-17 is equipped with an externally blown flap system that allows for a steep, low-speed final approach and low-landing speeds for short-field landings.
The aircraft is operated by a crew of three (pilot, co-pilot and loadmaster), reducing both manpower requirements and operating costs. This cost-effective flight crew complement is made possible through the use of an advanced digital avionics system and advanced cargo systems. In the cargo compartment, the C-17 carries the Army's wheeled vehicles in two side-by-side rows. For example, three combat-ready Stryker vehicles or 10 HMMWV (Humvees) comprise one deployment load. Also, the C-17 is able to transport the M1 Abrams main battle tank. Furthermore, the C-17 can carry up to 102 troops, 36 litter patients, or 18 standard 463-L pallets. Cargo and vehicles are loaded onto the C-17 through a large aft door that accommodates military vehicles and palletized cargo. The C-17 can carry virtually all of the Army's air-transportable equipment.
The C-17 is equipped with the AN/APS-150 Weather Radar from Honeywell, the AN/AAR-47 Missile Warning Receiver (MWR) and the AN/ALE-47 Countermeasures dispensing system. C-17s upgraded with the Large Aircraft Infrared Countermeasures (LAIRCM) system from Northrop Grumman are equipped with the AN/AAR-54 MWR and a laser transmitter assembly (SLTA or GLTA). LAIRCM provides defense for large aircraft from the growing threat of man-portable air defense (MANPAD) systems. LAIRCM is based on Northrop Grumman's AN/AAQ-24(V) Directional Infrared Countermeasure (DIRCM) system.
Design work on the C-17 began at McDonnell Douglas' (now Boeing) Long Beach facility in 1981. The C-17 made its first flight in September 1991 and the first production model was delivered to Charleston Air Force Base in South Carolina in June 1993. The first squadron of C-17s, the 17th Airlift Squadron, was declared operationally ready in January 1995. Since its first flight, the C-17 has accumulated more than 2.6 million flying hours. The C-17 has been involved in numerous conflicts, including Operation Joint Endeavor to support peacekeeping in Bosnia, Operation Allied Force in Kosovo, Operation Iraqi Freedom, and Operation Enduring Freedom in Afghanistan.
The Air Force originally planned to buy only 120 C-17s, however, this number has almost doubled. In July 2010, DoD officials told lawmakers that the U.S. military has enough C-17s in its fleet to provide airlift capability for years to come. In total, 223 aircraft have been purchased +1 aircraft in FY 2012 (operational loss replacement of one aircraft).
USAF C-17s are based at 12 bases. These are Charleston Air Force Base (AFB), SC; Joint Base Lewis-McChord, WA; the Air National Guard Base at Jackson, MS; McGuire AFB, NJ; March Air Reserve Base, CA; Joint Base Pearl Harbor-Hickam, HI; Joint Base Elmendorf-Richardson, AK; Altus AFB, OK; Dover AFB, DL; Travis AFB, CA; Wright-Patterson AFB, Ohio; and Stewart Air National Guard Base, NY.
As of March 2014, the total U.S. Air Force C-17 inventory is 223 aircraft with a designated service life of 30 years. On September 12, 2013, the last USAF C-17 was delivered to Charleston AFB in South Carolina.
There are also 37 C-17s in service with eight international customers (United Kingdom, Australia, Canada, India, Kuwait, United Arab Emirates, Qatar, and the 12-nation Strategic Airlift Capability consortium of NATO). In June 2011, India agreed to acquire 10 C-17s to be delivered in 2013 and 2014. India's first C-17 was delivered to the Indian Air Force on June 11, 2013. The non-U.S. C-17 fleet includes eight Aircraft stationed at RAF Brize Norton (United Kingdom), six aircraft at RAAF Base Amberley (Australia), four aircraft at RCAF Trenton (Canada), five aircraft at Hindon Air Force Station (India), three Strategic Airlift Capability NATO aircraft at Papa Air Base (Hungary), four aircraft at Al Udeid Air Base (Qatar), six aircraft at Al Dhafra Air Base (United Arab Emirates), and one aircraft delivered to Kuwait in February 2014.
Boeing will complete production of the C-17 and close the Long Beach assembly facility in mid-2015. The company plans to build 10 C-17s in 2014 and 7 in 2015. Boeing is in the process of laying off and/or transferring up to 3,000 employees who worked on the program.
In 2012, the unit cost of a C-17 was $225 million. The airframe cost $178.56 million, the four F117-PW-100 engines cost $39 million ($9.75 million each), and the avionics cost $7.44 million.
The C-17 provides outsize intra-theater airland/airdrop capability not available in the current airlift force. The aircraft provides rapid strategic delivery of troops and all types of cargo to main operating bases or directly to forward bases in the deployment area.
Major C-17 modifications in FY 2014 include Pylon Stub FFLZ Fixed Fairing (FF) Translating Fairing, Block 13-17 Retrofit, Identification Friend or Foe Global Air Traffic Management (IFF GATM) Mode 5, On Board Inert Gas Generating System (OBIGGS) II, and Extended Range Retrofit/OBIGGS II.
Major C-17 modifications in FY 2015 include Pylon Stub FFLZ Fixed Fairing (FF) Translating Fairing,
Block 13-17 Retrofit, Identification Friend or Foe Global Air Traffic Management (IFF GATM) Mode 5,
On Board Inert Gas Generating System (OBIGGS) II, and Next Generation Communication Navigation Surveillance/Air Traffic Management (CNS/ATM).
For more information, click to see the Complete FY 2015 C-17 Modifications Budget.
Sources: U.S. Department of Defense (DoD), The Boeing Company,
Northrop Grumman, and Pratt & Whitney.
Last Update: June 2, 2014.
By Joakim Kasper Oestergaard /// (email@example.com)
Boeing's C-17 Site: Boeing C-17 Globemaster III
Honeywell: AN/APS-150 Weather Radar
ATK: AN/AAR-47 Missile Warning System
BAE Systems: AN/ALE-47 CMDS
YouTube: The C-17 Globemaster III | YouTube Videos
Fact Sheet: C-17 Globemaster III | Fact Sheet
C-17 U.S. Defense Budget Charts:
Primary Function: Cargo and troop transport