A number of military and contract aircraft offer Space Available seats, including the following:
The Lockheed C-5 Galaxy is a large military transport aircraft originally designed and built by Lockheed, and now maintained and upgraded by its successor, Lockheed Martin. It provides the United States Air Force (USAF) with a heavy intercontinental-range strategic airlift capability, one that can carry outsize and oversize loads, including all air-certifiable cargo. The Galaxy has many similarities to its smaller Lockheed C-141 Starlifter predecessor, and the later Boeing C-17 Globemaster III. The C-5 is among the largest military aircraft in the world. The C-5 Galaxy's development was complicated, including significant cost overruns, and Lockheed suffered significant financial difficulties. Shortly after entering service, cracks in the wings of many aircraft were discovered and the C-5 fleet was restricted in capability until corrective work was completed. The C-5M Super Galaxy is an upgraded version with new engines and modernized avionics designed to extend its service life beyond 2040. The USAF has operated the C-5 since 1969. In that time, the airlifter supported US military operations in all major conflicts including Vietnam, Iraq, Yugoslavia and Afghanistan, as well as allied support, such as Israel during the Yom Kippur War and operations in the Gulf War. The Galaxy has also been used to distribute humanitarian aid and disaster relief, and supported the US Space Shuttle program.
The C-12 Huron isbased on the Beechcraft Super King Air business aircraft. It is the military designation for a series of twin-engine turboprop aircraft based on the Beechcraft Super King Air and Beechcraft 1900. C-12 variants are used by the United States Air Force, United States Army, United States Navy and United States Marine Corps. These aircraft are used for various duties, including embassy support, medical evacuation, as well as passenger and light cargo transport. Some aircraft are modified with surveillance systems for various missions, including the Cefly Lancer, Guardrail and Project Liberty programs.
C-17 Globemaster III
The Boeing C-17 Globemaster III is a large military transport aircraft. It was developed for the United States Air Force (USAF) from the 1980s to the early 1990s by McDonnell Douglas. The C-17 carries forward the name of two previous piston-engined military cargo aircraft, the Douglas C-74 Globemaster and the Douglas C-124 Globemaster II. The C-17 commonly performs tactical and strategic airlift missions, transporting troops and cargo throughout the world; additional roles include medical evacuation and airdrop duties. It was designed to replace the Lockheed C-141 Starlifter, and also fulfill some of the duties of the Lockheed C-5 Galaxy, freeing the C-5 fleet for outsize cargo. Boeing, which merged with McDonnell Douglas in the 1990s, continued to manufacture C-17s for export customers following the end of deliveries to the U.S. Air Force. Aside from the United States, the C-17 is in service with the United Kingdom, Australia, Canada, Qatar, United Arab Emirates, NATO Heavy Airlift Wing, India, and Kuwait. The final C-17 was completed at the Long Beach, California, plant and flown on 29 November 2015.
C-20 Gulfstream III is based on the Gulfstream III and Gulfstream IV business jets.
The C-21 Learjet is based on the Learjet 35A business jet. The Learjet Model 35 and Model 36 are a series of American multi-role business jets and military transport aircraft manufactured by Learjet. When used by the United States Air Force they carry the designation C-21A. The aircraft are powered by two Garrett TFE731-2 turbofan engines. Its cabin can be arranged for 6-8 passengers. The longer-range Model 36 has a shortened passenger area to provide more space in the aft fuselage for fuel tanks. The engines are mounted in nacelles on the sides of the aft fuselage. The wings are equipped with single-slotted flaps. The wingtip fuel tanks distinguish the design from other aircraft having similar functions.
C-22B is based on the Boeing 727 passenger jet. The Boeing 727 is a mid-size narrow-body three-engine jet aircraft built by Boeing Commercial Airplanes from the early 1960s to 1984. It can carry 149 to 189 passengers and later models can fly up to 2,700 nautical miles (5,000 km) nonstop. Intended for short and medium-length flights, the 727 can use relatively short runways at smaller airports. It has three Pratt & Whitney JT8D engines below the T-tail, one on each side of the rear fuselage with a center engine that connects through an S-duct to an inlet at the base of the fin. The 727 is Boeing's only tri-jet aircraft. The 727 followed the 707, a quad-jet airliner, with which it shares its upper fuselage cross-section and cockpit design. The 727-100 first flew in February 1963 and entered service with Eastern Air Lines in February 1964; the stretched 727-200 flew in July 1967 and entered service with Northeast Airlines that December. The 727 became a mainstay of airlines' domestic route networks and was also used on short- and medium-range international routes. Passenger, freighter, and convertible versions of the 727 were built. The 727 was heavily produced into the 1970s; the last 727 was completed in 1984. As of July 2013, a total of 109 Boeing 727s (5× 727-100s and 104× -200s) were in commercial service with 34 airlines. Airport noise regulations have led to 727s being equipped with hush kits.
C-32 is based on the Boeing 757 passenger jet; used as Air Force Two. The Boeing C-32 is a military passenger transportation version of the Boeing 757 for the United States Air Force. The C-32 provides transportation for United States leaders to locations around the world. The primary users are the Vice President of the United States, using the distinctive call sign "Air Force Two", the First Lady and the Secretary of State. On rare occasions, other members of the U.S. Cabinet and Congressional leaders have been authorized to fly aboard the C-32 for various missions. Presidents Barack Obama, George W. Bush and Bill Clinton have at times flown on a C-32 as Air Force One in place of the larger VC-25A to airports that cannot support jumbo jets.
The UC-35 Citation V is based on the Cessna Citation V business jet. The Cessna Citation V (Model 560) is a turbofan-powered small-to-medium sized business jet built by the Cessna Aircraft Company in Wichita, Kansas. A stretch of the Cessna Citation II series, the Citation V aircraft was evolved into the Citation Ultra, the Citation Encore, and the Citation Encore+ models.
The C-37 Gulfstream V is based on the Gulfstream V business jet. The Gulfstream V (Model GV, pronounced Gee-5) is a long-range, large business jet aircraft produced by Gulfstream Aerospace, derived from the previous Gulfstream IV. It flies up to Mach 0.90, up to 51,000 feet (16,000 m) and have a 6,500 nautical miles (12,000 km) range, it typically accommodates four crew and 14 passengers. It first flew on November 28, 1995, and entered service in June 1997. It is used by the US military under the designation C-37A. It is followed by an improved version, the Gulfstream 550 (Model GV-SP).
C-38 Courier based on the IAI Astra business jet. The Gulfstream G100, formerly known as the IAI Astra SPX, is an Israel Aerospace Industries-manufactured twin-engine business jet, now produced for Gulfstream Aerospace. The United States Air Force designation for the G100 is C-38 Courier.
The Boeing C-40 Clipper is a military version of the Boeing 737-700C airline transport. It is used by both the United States Navy and the United States Air Force.
The Lockheed C-130 Hercules is a four-engine turboprop military transport aircraft designed and built originally by Lockheed, now Lockheed Martin. Capable of using unprepared runways for takeoffs and landings, the C-130 was originally designed as a troop, medevac, and cargo transport aircraft. The versatile airframe has found uses in a variety of other roles, including as a gunship (AC-130), for airborne assault, search and rescue, scientific research support, weather reconnaissance, aerial refueling, maritime patrol, and aerial firefighting. It is now the main tactical airlifter for many military forces worldwide. Over forty models and variants of the Hercules, including a civilian one marketed as Lockheed L-100, operate in more than sixty nations. The C-130 entered service with the U.S. in the 1950s, followed by Australia and others. During its years of service, the Hercules family has participated in numerous military, civilian and humanitarian aid operations. In 2007, the C-130 became the fifth aircraft—after the English Electric Canberra, B-52 Stratofortress, Tu-95, and KC-135 Stratotanker—to mark 50 years of continuous service with its original primary customer, in this case, the United States Air Force. The C-130 Hercules is the longest continuously produced military aircraft at over 60 years, with the updated Lockheed Martin C-130J Super Hercules being produced today.
The McDonnell Douglas KC-10 Extender is an aerial refueling tanker aircraft - the military version of the three-engined DC-10 airliner operated by the United States Air Force (USAF).[N 1] The KC-10 was developed from the Advanced Tanker Cargo Aircraft Program. It incorporates military-specific equipment for its primary roles of transport and aerial refueling. It was developed to supplement the KC-135 Stratotanker following experiences in Southeast Asia and the Middle East. The KC-10 was the second McDonnell Douglas transport aircraft to be selected by the Air Force following the C-9. A total of 60 KC-10s were produced for the USAF. The Royal Netherlands Air Force operates two similar tankers designated KDC-10 that were converted from DC-10s. The KC-10 plays a key role in the mobilization of US military assets, taking part in overseas operations far from home. These aircraft performed airlift and aerial refueling during the 1986 bombing of Libya (Operation Eldorado Canyon), the 1990–91 Gulf War with Iraq (Operations Desert Shield and Desert Storm), the NATO bombing of Yugoslavia (Operation Allied Force), War in Afghanistan (Operations Enduring Freedom), and Iraq War (Operations Iraqi Freedom and New Dawn). The KC-10 is expected to serve until 2043.
The Boeing KC-135 Stratotanker is a military aerial refueling aircraft. It and the Boeing 707 airliner developed from the Boeing 367-80 prototype. It is the predominant variant of the C-135 Stratolifter family of transport aircraft. The KC-135 was the US Air Force's first jet-powered refueling tanker and replaced the KC-97 Stratofreighter. The KC-135 was initially tasked with refueling strategic bombers, but was used extensively in the Vietnam War and later conflicts such as Operation Desert Storm to extend the range and endurance of US tactical fighters and bombers. The KC-135 entered service with the United States Air Force (USAF) in 1957; it is one of six military fixed-wing aircraft with over 50 years of continuous service with its original operator. The KC-135 is supplemented by the larger KC-10. Studies have concluded that many of the aircraft could be flown until 2040, although maintenance costs have greatly increased. The aircraft will eventually be replaced by the Boeing KC-46 Pegasus.
While unmanned aircraft do not currently carry passengers, the technology represents the future of airpower.