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Slip (aerodynamics)
A slip, also called a side slip, is uncoordinated flight in which the airplane moves somewhat sideways through the air; pilots use it to lose altitude or counter crosswinds.
Slot trading
Slot trading is the buying, selling, leasing, or swapping of airport slots, the take-off and landing authorizations airlines hold, as a secondary market at congested airports.
Soaring Society of America
The Soaring Society of America (SSA) is the national governing body for the sport of gliding in the United States, founded in 1932 with almost 10,000 members.
SOCATA TBM
The SOCATA TBM, also called the Daher TBM, is a family of French pressurized single-engine turboprops built at Tarbes and flown since 1990, beginning with the TBM 700.
Society of the Snow
Society of the Snow is a 2023 Spanish-language survival drama directed by J. A. Bayona, telling the story of the 1972 Andes plane crash from the survivors' view.
Soekarno–Hatta International Airport
Soekarno–Hatta International Airport, also known as Bandara Internasional Soekarno-Hatta, is Indonesia's main international gateway, located in Tangerang, Banten, near Jakarta and named for Sukarno and Mohammad Hatta.
Sofiya Ozerkova
Sofiya Ozerkova, born in 1912, was a Soviet military engineer who led the Night Witches regiment's engineering service and survived a 1942 death sentence, finishing the war a Guards captain.
Soko J-22 Orao
The Soko J-22 Orao is a twin-engined subsonic ground-attack and reconnaissance aircraft developed jointly by Yugoslavia and Romania, built by SOKO and still flown by Serbia.
Solar Impulse
Solar Impulse, also called the Solar Impulse Project, is a Swiss solar aircraft project founded by Bertrand Piccard and André Borschberg that circled the world on solar power in 2016.
Somaliland campaign (1920)
The Somaliland campaign, also known as the Fifth Expedition of the Somaliland Campaign, was a 1920 British operation in which the RAF destroyed Mohammed Abdullah Hassan's Dervish power.
Sonobuoy
A sonobuoy, also known as a sonar buoy, is an expendable air-launched or ship-launched acoustic sensor that floats on the surface and relays underwater sounds by radio to aircraft or ships.
Sopwith Snipe
The Sopwith Snipe (Sopwith 7F.1) was a British single-seat biplane fighter designed as a successor to the Sopwith Camel, entering service in 1918 and serving as the Royal Air Force's standard fighter until the mid-1920s.
Sopwith Triplane
The Sopwith Triplane, nicknamed the Tripehound, was a British First World War single-seat fighter flown almost exclusively by the Royal Naval Air Service from late 1916 through 1917.
Sosoliso Airlines Flight 1145
Sosoliso Airlines Flight 1145 was a Nigerian domestic flight from Abuja to Port Harcourt that crashed on landing on 10 December 2005, killing 108 of 110 aboard.
South African Airways
South African Airways (SAA) is a state-owned flag carrier founded in 1934 in Johannesburg. It exited business rescue in April 2021 and rebuilt its fleet.
South Air
South Air is a Pakistani domestic regional airline based in Karachi, founded in 2025 and backed by SOS Group, which began scheduled ATR 72 flights on 16 July 2026.
Southampton Airport
Southampton Airport, also known as Southampton International Airport, is a regional airport at Eastleigh in Hampshire, England, and the 1936 takeoff point for the Spitfire prototype.
Southern Airways Flight 242
Southern Airways Flight 242 was a DC-9 that crashed at New Hope, Georgia, on April 4, 1977, after both engines failed in a severe thunderstorm, killing 72 people.
Southern Airways Flight 49
Southern Airways Flight 49 was a Memphis-to-Miami DC-9 flight hijacked by three fugitives at Birmingham, Alabama, in November 1972; the 30-hour ordeal ended in Havana and prompted universal US passenger screening.
Southern Airways Flight 932
Southern Airways Flight 932, also known as the Marshall plane crash, was a 1970 crash near Huntington, West Virginia, that killed all 75 aboard, including the Marshall University football team.
Southern Rhodesia in World War II
Southern Rhodesia in World War II covers the British colony's (now Zimbabwe) role in the Allied effort, including the Rhodesia Air Training Group, which trained 8,235 Allied aircrew.
Southwest Airlines
Southwest Airlines is a Dallas, Texas-based low-cost airline founded by Rollin King and Herb Kelleher in 1971, whose all-Boeing 737, point-to-point model became the template for budget carriers worldwide.
Southwest Airlines fleet
The Southwest Airlines fleet is the all-Boeing 737 jet fleet flown by Southwest Airlines since 1971, apart from a few Boeing 727s; it numbered 803 aircraft as of December 31, 2025.
Southwest Airlines Flight 1248
Southwest Airlines Flight 1248 was a passenger flight that overran the runway landing at Chicago Midway in snow on December 8, 2005, killing a boy in a car.
Southwest Airlines Flight 1380
Southwest Airlines Flight 1380 was a domestic passenger flight that suffered an engine fan blade failure on April 17, 2018, killing one passenger before landing safely in Philadelphia.
Southwest Florida International Airport
Southwest Florida International Airport, also called Fort Myers Airport, is a commercial airport in Fort Myers, Florida, opened in 1983 and handling a record 11 million passengers in 2025.
Soviet cruiser Chervona Ukraina (Червона Україна)
Chervona Ukraina (Червона Україна) was a Soviet cruiser sunk by German dive-bombers at Sevastopol on 12 November 1941, the only Soviet cruiser lost in the war.
Soviet Navy warships sunk by aircraft in World War II
German aircraft sank eleven large Soviet Navy warships between 1941 and 1945, mostly in harbor or after prior damage; the leader Tashkent absorbed roughly 300 bombs in one day.
Space Cowboys
Space Cowboys is a 2000 American adventure drama directed by and starring Clint Eastwood, with Tommy Lee Jones, Donald Sutherland, and James Garner as aging engineers sent to repair a satellite.
Space Mirror Memorial
The Space Mirror Memorial, also known as the Astronaut Memorial, is the United States' national memorial to fallen astronauts at the Kennedy Space Center Visitor Complex in Florida.