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Scoot
Scoot, also known as Scoot Pte Ltd, is a Singapore low-cost airline wholly owned by Singapore Airlines, founded in 2011 and flying from Changi Airport across Asia-Pacific and beyond.
Scope clause
A scope clause is a provision in a major US airline's pilot union contract limiting regional carriers' flying, typically capping regional jet seats at 50 to 76.
Scottish Aviation Bulldog
The Scottish Aviation Bulldog, also known as the Beagle Bulldog, is a two-seat aerobatic military trainer produced at Prestwick, Scotland, from 1971, with 130 serving the RAF.
Scramjet
A scramjet (supersonic combustion ramjet) is an airbreathing jet engine that burns fuel in supersonic airflow, pursued since the 1950s for hypersonic flight up to at least Mach 15.
Seaplane
A seaplane, also called a hydro-aeroplane, is an airplane designed to take off from and land on water, either as a flying boat or a floatplane.
Seaplane landing area
A seaplane landing area is a defined area on water at an aerodrome used for seaplane takeoffs and landings; unlike a paved runway, its surface shifts with wind and current.
Search for Malaysia Airlines Flight 370
The search for Malaysia Airlines Flight 370 is the effort to locate the Boeing 777 that vanished flying Kuala Lumpur to Beijing in 2014 with 239 people aboard.
Seat configurations of Airbus A380
The seat configurations of the Airbus A380 are the cabin layouts operators choose for the world's only full-length double-deck passenger aircraft, certified for up to 853 seats and typically flown with 400 to 550.
Seattle–Tacoma International Airport
Seattle–Tacoma International Airport, also known as Sea-Tac Airport, is the main airport for the Seattle area, located in SeaTac, Washington, and operated by the Port of Seattle.
Secondary Security Screening Selection
Secondary Security Screening Selection, or SSSS, is a TSA code printed on boarding passes, primarily on US flights, that selects passengers for enhanced checks like pat-downs, luggage searches, and explosive-trace swabs.
Secondary surveillance radar
Secondary surveillance radar (SSR) is an air traffic control system that interrogates aircraft transponders on 1030 MHz and receives replies on 1090 MHz, providing identity and altitude.
Self-sealing fuel tank
The self-sealing fuel tank is a fuel container, typically a flexible bladder, that seals small punctures on its own; the US Navy began developing the technology in 1940.
Sensory illusions in aviation
Sensory illusions in aviation are false perceptions of an aircraft's position, attitude, or motion caused by conflicting sensory signals, and they underlie most cases of fatal spatial disorientation.
SEPECAT Jaguar
The SEPECAT Jaguar is an Anglo-French twin-engine strike and trainer aircraft, first flown in 1968, that served with the Royal Air Force, the French Air Force, and India.
Serious incident (aviation)
A serious incident in aviation is an incident indicating a high probability of an accident, defined by ICAO Annex 13 and investigated like an accident.
Services Selection Board
The Services Selection Board (SSB) is the Indian Ministry of Defence organization that assesses candidates for commission as officers in the Army, Navy, and Air Force over five days.
Servo control
Servo control is the method by which a radio-controlled servo converts a command signal into a held shaft position, using pulses of about 1 to 2 ms.
Seversky P-35
The Seversky P-35, also known as the P-35 Guardsman, was a 1930s American fighter that won a 1936 Army competition and served briefly in the Philippines.
Seychelles International Airport
Seychelles International Airport, also known as Mahé Airport, is the primary international airport of Seychelles, on the southeast coast of Mahé; opened in 1972 by Queen Elizabeth II, it is the country's main gateway.
Shaanxi Y-8
The Shaanxi Y-8, or Yun-8, is a Chinese four-engine turboprop transport developed from the Soviet Antonov An-12, serving since 1980 as the PLA's mainstay medium transport.
Shaanxi Y-9 (运-9)
The Shaanxi Y-9 (运-9), NATO reporting name Claw, is a Chinese medium tactical transport built by Shaanxi Aircraft Corporation, serving with the PLAAF since 2012.
Shahed 129 (شاهد ۱۲۹)
The Shahed 129 (شاهد ۱۲۹) is an Iranian armed surveillance drone unveiled in 2012, roughly the size of the MQ-1 Predator and the backbone of Iran's drone fleet.
Shanghai Hongqiao International Airport (上海虹桥国际机场)
Shanghai Hongqiao International Airport (上海虹桥国际机场), known as Hongqiao Airport, is one of Shanghai's two airports, handling mainly domestic and regional traffic and passing 50 million passengers in 2025.
Shanghai Pudong International Airport (上海浦东国际机场)
Shanghai Pudong International Airport (上海浦东国际机场), known as Pudong Airport, is the main international airport of Shanghai, China, opened in 1999 and the country's busiest international gateway.
Shankh Air
Shankh Air is a proposed Indian regional airline based in Uttar Pradesh that received a civil aviation ministry No Objection Certificate in 2024 but had not begun flying as of mid-2026.
Shannon Airport
Shannon Airport (Irish: Aerfort na Sionainne) is an international airport in County Clare, Ireland, opened in 1945 and best known for US border preclearance and inventing duty-free shopping in 1947.
Shanwick Oceanic Control
Shanwick Oceanic Control, known as Shanwick, is the air traffic control service for the northeastern North Atlantic, combining Shannon radio communications with control from Prestwick, Scotland.
Sharjah International Airport (مطار الشارقة الدولي)
Sharjah International Airport (مطار الشارقة الدولي) is the international airport of Sharjah in the UAE, opened in 1977 and the main hub of Air Arabia.
Shelley K. Lavender
Shelley K. Lavender is a retired American aerospace executive who was president of Boeing Military Aircraft and was elected to the National Academy of Engineering in 2021.
Shenyang FC-31
The Shenyang FC-31, also known as the J-31, F60, or Gyrfalcon, is a twin-engine stealth multirole fighter developed by Shenyang Aircraft Corporation, first flown in October 2012.