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Helicopter carrier
A helicopter carrier is a warship with a full-length or near-full-length flight deck built to embark, launch, and recover helicopters for amphibious assault, anti-submarine warfare, and disaster relief.
Helicopter emergency medical services pilots
Helicopter emergency medical services (HEMS) pilots are commercial pilots who fly air ambulance missions, moving patients and transplant organs between scenes, hospitals, and trauma centers.
Helicopter flight controls
Helicopter flight controls are the cockpit inputs, chiefly the collective, the cyclic, and antitorque pedals, that a pilot uses to manage a helicopter's lift, attitude, and heading.
Helicopter rotor
A helicopter rotor is a set of rotating, pitched blades, driven through a transmission, that generates the lift, thrust, and control forces keeping a helicopter airborne and maneuverable.
Helios Airways Flight 522
Helios Airways Flight 522, the Helios Airways Disaster, was a Cypriot passenger flight that crashed near Grammatiko, Greece, in 2005, killing all 121 on board.
HelloJets
HelloJets is a Romanian ACMI and charter airline based in Bucharest, founded in 2021, that supplies wet-leased aircraft and crews to other airlines and operates charter flights for tour operators.
Helmet-mounted display
A helmet-mounted display (HMD) is a display on a pilot's helmet showing flight, sensor, and weapon information in the pilot's line of sight, used since the 1960s.
Helsinki Airport
Helsinki Airport, also known as Helsinki-Vantaa Airport, is Finland's largest airport and main international gateway, operated by Finavia and handling about 17 million passengers in 2025.
Henderson Field (Guadalcanal)
Henderson Field, also known as NAF Guadalcanal, was the airfield captured by US Marines on 8 August 1942, whose Cactus Air Force became central to the Guadalcanal campaign.
Henri Coandă
Henri Coandă (1886–1972) was a Romanian inventor and aeronautical engineer best known for the propellerless Coandă-1910 aircraft, the Coandă effect, and more than 250 patents.
Henri Giffard
Henri Giffard (1825–1882) was a French engineer who flew the first powered, steerable airship from Paris in 1852 and invented the steam injector adopted on railways worldwide.
Henschel Hs 129
The Henschel Hs 129 was a German twin-engine, single-seat anti-tank aircraft of the Second World War, nicknamed the flying can-opener, serving mainly on the Eastern Front from 1942.
Heritage aero-engine restoration
Heritage aero-engine restoration is the preservation, overhaul, and running of historic aircraft engines so they can fly again or run safely for the public, from Merlin overhauls to museum rebuilds.
Heritage airworthiness regulation
Heritage airworthiness regulation lets historic and ex-military aircraft fly legally through lighter certification paths such as the UK Permit to Fly and the US experimental category.
Hermeus
Hermeus is an American defense aviation company founded in 2018 that develops hypersonic aircraft through rapid prototyping, including the Quarterhorse drones, which went supersonic in 2026.
HESA Saeqeh
The HESA Saeqeh, also spelled Sa'eqeh or Saegheh, is an Iranian single-seat jet fighter built by HESA as a derivative of the Northrop F-5E Tiger II, distinguished by twin outward-canted vertical tails.
HESA Shahed 136
The HESA Shahed 136 (شاهد ۱۳۶), called the Geran-2 in Russia, is an Iranian delta-winged one-way attack drone used by Russia against Ukraine since 2022.
Heydar Aliyev International Airport
Heydar Aliyev International Airport, formerly Baku Airport, is Azerbaijan's largest airport, serving Baku from 20 km east of the city and hub of Azerbaijan Airlines.
Hidden Figures (book)
Hidden Figures is Margot Lee Shetterly's 2016 nonfiction book about African American women mathematicians at Langley, a #1 New York Times bestseller adapted into an Oscar-nominated film.
High-altitude military parachuting
High-altitude military parachuting, also called HALO or HAHO, inserts personnel by free-fall parachute from up to 35,000 feet; in HAHO the jumper glides tens of miles under canopy.
High-lift device
A high-lift device is a movable wing component, such as a trailing-edge flap or leading-edge slat, deployed during takeoff and landing to increase lift at low speeds.
Hijack (TV series)
Hijack is a 2023 British real-time thriller series created by George Kay and Jim Field Smith for Apple TV+, starring Idris Elba as a business negotiator aboard a hijacked Dubai-to-London flight.
Hiller Aircraft
Hiller Aircraft, also known as Hiller Helicopters, was an American helicopter manufacturer founded by Stanley Hiller Jr. in 1942, best known for the UH-12/OH-23 Raven.
Hiller OH-23 Raven
The Hiller OH-23 Raven, also called the H-23 or UH-12, is an American light observation helicopter, over 2,000 built, that served the US Army in Korea and Vietnam.
Hilo International Airport
Hilo International Airport, known as General Lyman Field until 1989, is a state-owned airport about two miles east of Hilo, Hawaii, serving Hawaiian and Southwest Airlines flights.
Hindenburg disaster
The Hindenburg disaster was the fire that destroyed the German passenger airship Hindenburg at Lakehurst, New Jersey, on May 6, 1937, killing 35 of the 97 people on board and one ground crewman.
Hindenburg-class airship
The Hindenburg class comprised two German rigid passenger airships, LZ 129 Hindenburg and LZ 130 Graf Zeppelin II, the largest ever built for commercial service.
Hindustan Aeronautics Limited (हिंदुस्तान एयरोनॉटिक्स लिमिटेड)
Hindustan Aeronautics Limited (हिंदुस्तान एयरोनॉटिक्स लिमिटेड), commonly known as HAL, is an Indian state-owned aerospace and defense company in Bengaluru, founded as Hindustan Aircraft Limited in 1940.
History of airport identifier systems
The history of airport identifier systems traces how airport codes evolved from 1930s airline-chosen abbreviations and weather-service city codes into the parallel ICAO and IATA schemes in use today.
History of aviation
The history of aviation covers the development of flying machines from the Wright brothers' first powered, controlled flight in 1903 through the jet age and mass air travel.