68-469: Australian Aviation is an online and print aviation publication covering the aviation industry. Australian Aviation was founded by in 1977 by Jim Thorn as Australian Aviation & Defence Review . It was founded as an annual, becoming a quarterly publication in 1979, bi-monthly in 1985 and monthly from May 1990. From March 1994 it became all colour. In April 2005, it was sold to employees Gerard Frawley, Andrew Mclaughlin and Lee Anne Simm. In 2018,
136-459: A brief speed trial (during which a speed of 71.9 mph (115.7 km/h) was reached), a series of turning trials was started at a speed of 62.7 mph (100.9 km/h) and an altitude of 2,500 ft (760 m). Passing over Hull, a series of control reversals were started which the Germans would never have attempted at such a low altitude. Wann, who was in the control gondola, stated that
204-583: A busy terminal area or using a major airport), and in many areas, such as northern Canada and low altitude in northern Scotland, air traffic control services are not available even for IFR flights at lower altitudes. Like all activities involving combustion , operating powered aircraft (from airliners to hot air balloons) releases soot and other pollutants into the atmosphere. Greenhouse gases such as carbon dioxide (CO 2 ) are also produced. In addition, there are environmental impacts specific to aviation: for instance, Another environmental impact of aviation
272-463: A centenary memorial service was held at Hull Minster . The loss of the R.38, which represented the hope of airship men in Britain, resulted in three official enquiries into the disaster. The first, chaired by Air Vice-Marshal Sir John Salmond and composed mainly of RAF personnel, was convened on 27 August. Its remit was to consider the general circumstances of the accident, and, although it came to
340-507: A civil aviation authority must approve an aircraft suitable for safe flight operations. MRO firms are responsible for this process, thoroughly checking and documenting all components' repairs while tracking mechanical, propulsion, and electronic parts. Aviation regulators oversee maintenance practices in the country of aircraft registration, manufacture, or current location. All aircraft maintenance activities must adhere to international regulations that mandate standards. An aviation accident
408-456: A feat made possible by their invention of three-axis control and in-house development of an engine with a sufficient power-to-weight ratio . Only a decade later, at the start of World War I , heavier-than-air powered aircraft had become practical for reconnaissance, artillery spotting, and even attacks against ground positions. Aircraft began to transport people and cargo as designs grew larger and more reliable. The Wright brothers took aloft
476-524: A few hundred miles, was diminishing as airplane design advanced. The "Golden Age" of the airships ended on May 6, 1937. That year the Hindenburg caught fire, killing 36 people. The cause of the Hindenburg accident was initially blamed on the use of hydrogen instead of helium as the lift gas. An internal investigation by the manufacturer revealed that the coating used in the material covering the frame
544-585: A range of around 500 ft (150 m). The highly experienced Pritchard took over the controls from the American coxswain and reduced the oscillation, but several girders in the vicinity of the midship engine cars had already failed. The control surfaces were still over balanced. More importantly girders of intermediate frame 7b as well as longitudinal Girder F had failed in one place, while frame 7a and longitudinal F' each had failed in two locations. R.38 returned to Howden at reduced speed. Work on reinforcing
612-461: A second test flight was carried out on 17–18 July. The control balance problem remained, and, on return to Cardington, all the control surfaces were reduced in area. On 17–18 July, a third flight was made, during which the airship was flown from Cardington to Howden and then out over the North Sea, where the speed was increased to 58 mph (93 km/h), causing the ship to begin hunting over
680-508: Is noise pollution , mainly caused by aircraft taking off and landing. Sonic booms were a problem with supersonic aircraft such as the Concorde . [REDACTED] This article incorporates text by Wirths, Oliver; Tóth,Zsófia; Diaz Ruiz, Carlos available under the CC BY 4.0 license. R38-class airship The R.38 class (also known as the A class ) of rigid airships
748-509: Is a firm that ensures airworthiness or air transport. According to a 2024 article, "maintenance (M) involves inspecting, cleaning, oiling, and changing aircraft parts after a certain number of flight hours. Repair (R) is restoring the original function of parts and components. Overhaul (O) refers to extensive maintenance, the complete refurbishment of the aircraft, and upgrades in avionics, which can take several weeks to complete." Airlines are legally obligated to certify airworthiness, meaning that
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#1732776747452816-458: Is defined by the Convention on International Civil Aviation Annex 13 as an occurrence associated with the operation of an aircraft which takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked, in which a person is fatally or seriously injured, the aircraft sustains damage or structural failure or the aircraft
884-759: Is especially important for aircraft flying under instrument flight rules (IFR), when they may be in weather conditions that do not allow the pilots to see other aircraft. However, in very high-traffic areas, especially near major airports, aircraft flying under visual flight rules (VFR) are also required to follow instructions from ATC. In addition to separation from other aircraft, ATC may provide weather advisories, terrain separation, navigation assistance, and other services to pilots, depending on their workload. ATC do not control all flights. The majority of VFR (Visual Flight Rules) flights in North America are not required to contact ATC (unless they are passing through
952-490: Is missing or is completely inaccessible. An accident in which the damage to the aircraft is such that it must be written off, or in which the plane is destroyed, is called a hull loss accident . The first fatal aviation accident occurred in a Wright Model A aircraft at Fort Myer, Virginia, US , on September 17, 1908, resulting in injury to the pilot, Orville Wright , and death of the passenger, Signal Corps Lieutenant Thomas Selfridge . The worst aviation accident in history
1020-458: Is private or commercial and on the type of equipment involved. Many small aircraft manufacturers serve the general aviation market, with a focus on private aviation and flight training. The most important recent developments for small aircraft (which form the bulk of the GA fleet) have been the introduction of advanced avionics (including GPS ) that were formerly found only in large airliners , and
1088-537: Is up to people in England." Following a spell of bad weather, the airship was walked out on 23 August and, in the early morning, took off for its fourth flight, which had an intended destination of RNAS Pulham in Norfolk, where it could be moored to a mast (a facility unavailable at Howden). The mooring, however, proved impossible because of low cloud, so the airship returned to sea for the night. The next day, after
1156-482: The Humber Estuary . 16 of the 17 Americans, and 28 of the 32 Britons, in the crew were killed, including both Maitland and Pritchard. The only American to survive was Rigger Norman Otto Walker. Four of those who survived were in the tail section, Flight Lieutenant Archibald Herbert Wann, R.38's British Commanding Officer, was in the control gondola and survived. A memorial was erected at Hull, and in 2021,
1224-904: The September 11 attacks and the SARS pandemic have driven many older airlines to government-bailouts, bankruptcy or mergers. At the same time, low-cost carriers such as Ryanair , Southwest and WestJet have flourished. General aviation includes all non-scheduled civil flying, both private and commercial . General aviation may include business flights, air charter , private aviation, flight training, ballooning , paragliding , parachuting , gliding , hang gliding , aerial photography , foot-launched powered hang gliders , air ambulance, crop dusting, charter flights, traffic reporting , police air patrols and forest fire fighting. Each country regulates aviation differently, but general aviation usually falls under different regulations depending on whether it
1292-576: The scuttling of the German fleet at Scapa Flow . An order was placed with the Zeppelin company for a new craft, to be paid for by the Germans (which became USS Los Angeles ), and, to go with it, they also planned to build one in the United States (which became USS Shenandoah ). With the news of the impending termination of R.38 ' s construction, the possibility of taking over the project
1360-526: The 18th century with the development of the hot air balloon , an apparatus capable of atmospheric displacement through buoyancy . Some of the most significant advancements in aviation technology came with the controlled gliding flying of Otto Lilienthal in 1896; then a large step in significance came with the construction of the first powered airplane by the Wright brothers in the early 1900s. Since that time, aviation has been technologically revolutionized by
1428-546: The 1960s composite material airframes and quieter, more efficient engines have become available, and Concorde provided supersonic passenger service for more than two decades, but the most important lasting innovations have taken place in instrumentation and control. The arrival of solid-state electronics, the Global Positioning System , satellite communications , and increasingly small and powerful computers and LED displays, have dramatically changed
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#17327767474521496-637: The Atlantic. The commander of the Howden Detachment Commander Maxfield disagreed and urged that the test of R.38 be completed in one day. Air Commodore Edward Maitland as the man most responsible for testing the R.38 was appalled and disagreed. He protested the abbreviated test schedule. He was told to not provide advice unless asked. The Air Ministry ruled that 50 hours would be sufficient. The decision had been made in ignorance by officials unfamiliar with airships as well as
1564-771: The Earth's atmosphere. Meanwhile, the need to decarbonize the aviation industry to face the climate crisis has increased research into aircraft powered by alternative fuels, such as ethanol , electricity , hydrogen , and even solar energy , with flying prototypes becoming more common. Civil aviation includes all non-military flying, both general aviation and scheduled air transport . There are five major manufacturers of civil transport aircraft (in alphabetical order): Boeing, Airbus, Ilyushin and Tupolev concentrate on wide-body and narrow-body jet airliners , while Bombardier, Embraer and Sukhoi concentrate on regional airliners . Large networks of specialized parts suppliers from around
1632-719: The Exchequer and the US Navy's commander Maxwell converged to cause risks to be taken which were questioned at the time and ignored with fatal consequences. Data from Flight 6 June 1921 : ZR.2 ("R.38") General characteristics Performance Armament In December 1922, the Council of the Royal Aeronautical Society decided to offer an annual prize for technical papers on airships, open to international competition. This would be known as
1700-868: The French Dixmude in 1923 (52 dead), the USS Shenandoah in 1925 (14 dead), the British R101 in 1930 (48 dead), the USS ; Akron in 1933 (73 dead), the USS Macon in 1935 (2 dead), and the German Hindenburg in 1937 (36 dead). The R.38 class was designed to meet an Admiralty requirement of June 1918 for an airship capable of patrolling for six days at ranges of up to 300 miles from home base and altitudes of up to 22,000 ft (6,700 m). A heavy load of armaments
1768-528: The French War ministry. The report on the trials was not publicized until 1910, as they had been a military secret. In November 1906, Ader claimed to have made a successful flight on October 14, 1897, achieving an "uninterrupted flight" of around 300 metres (980 feet). Although widely believed at the time, these claims were later discredited. The Wright brothers made the first successful powered, controlled and sustained airplane flight on December 17, 1903,
1836-524: The Hindenburg was the first to be captured on newsreel. In 1799, Sir George Cayley set forth the concept of the modern airplane as a fixed-wing flying machine with separate systems for lift, propulsion, and control. Otto Lilienthal was the first person to make well-documented, repeated, successful flights with gliders , therefore making the idea of " heavier than air " a reality. Newspapers and magazines published photographs of Lilienthal gliding, favorably influencing public and scientific opinion about
1904-774: The R.38 design was based. There was considerable concern expressed by Admiral Griffen, the chief of the Bureau of Steam Engineering. Burgess at the Bureau of Construction and Repair was also concerned. Starr Truscott of the Bureau of Construction and Repairs believed that the negative endorsements of Admirals Griffin and Taylor would suffice to extend trials for the ZR-2 (R.38) but he was soon proven wrong. Admiral Taylor endorsed Commander Maxfield's optimistic report of July 20. Truscott later came to accept that decision writing "We must accept ship as per British practice, i.e., if acceptable to Air Ministry it must be to us. Question of starting flight
1972-505: The Royal Airship Works. Later in 1919, several airship orders were cancelled as a peacetime economy measure, including the three planned R.38 class ships. In a further round of cutbacks, the cancellation of the unfinished R.38 also appeared imminent, but, before this actually happened, the project was offered to the United States. The United States Navy demanded significant changes in the airship including modification to
2040-526: The USN) was destroyed by a structural failure while in flight over the city of Hull . It crashed into the Humber Estuary , killing 44 out of the 49 crew aboard and one black cat named Snowball. At the time of its first flight it was the world's largest airship. Its destruction was the first of the great airship disasters, followed by the Italian-built US semi-rigid airship Roma in 1922 (34 dead),
2108-626: The United States) they may use radar to see aircraft positions. Becoming an air traffic controller in the United States typically requires an associate or bachelor's degree from the Air Traffic Collegiate Training Initiative. The FAA also requires extensive training, along with medical examinations and background checks. Some controllers are required to work weekend, night, and holiday shifts. There are generally four different types of ATC: ATC
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2176-521: The aerodynamic forces ... " and he asked one of his chiefs "if this could possibly be true. Not only did he confirm it but he pointed out that no one had been sacked over it or even suffered any censure." For the men who built the R.38 its sale to the US Navy represented a last chance to salvage something from the Royal Navy's rigid airship program and its takeover and abandonment by the RAF. The demands of
2244-402: The airworthiness of that design remained in the same hands. Nevil Shute Norway (who was the novelist Nevil Shute ) worked on the design of the R.100 airship for Vickers Ltd. from 1924. When he researched previous airship calculations and read the reports of the 1921 R.38 crash he was "unable to believe the words he was reading" that "the civil servants concerned had made no attempt to calculate
2312-476: The bow in order to allow mooring to a mast, access to the mast from the keel and the addition of weight to the stern to ensure balance. The hull contained 14 hydrogen-filled gasbags. The 13-sided mainframes were 49 ft (15 m) apart, and were made up of diamond-shaped trusses connected by 13 main and 12 secondary longitudinal girders and a trapezoidal keel. There were two secondary ring frames between each pair of mainframes. The forward-mounted control car
2380-454: The buckled girders was carried out and completed by 30 July at Howden. There were increasing doubts being expressed about the design, including some made by Air Commodore E. M. Maitland , the very experienced commander of the Howden base. Maitland urged that all future speed trials be conducted at higher altitude as was the practice of the Germans while testing the fragile Zeppelins upon which
2448-418: The cockpits of airliners and, increasingly, of smaller aircraft as well. Pilots can navigate much more accurately and view terrain, obstructions, and other nearby aircraft on a map or through synthetic vision , even at night or in low visibility. On June 21, 2004, SpaceShipOne became the first privately funded aircraft to make a spaceflight , opening the possibility of an aviation market capable of leaving
2516-431: The conclusion that the structure had failed while extreme control forces were being exerted, it was considered necessary to carry out a more detailed technical inquiry into the airship's design. The report also criticized the system by which a single authority was responsible both for the airship's construction and for inspection of the work, and, given the great differences between R.38 and previous British designs, held that
2584-565: The controls were never put beyond 15 degrees, while Bateman, from the National Physical Laboratory who was recording pressures upon the vertical fins, stated clearly that the rudders were being driven rapidly from hard over to hard over which would have been 25 degrees from one side to 25 degrees to the other. At 17:37, while close offshore near Hull and watched by thousands of spectators, the structure failed amidships. Eyewitnesses reported seeing creases diagonally along
2652-559: The design should have been subjected to a more thorough scrutiny. The Admiralty held a second inquiry into the history of the design of the airship, and into its construction up to the point where it was taken over from the Admiralty by the Air Ministry. In contrast to the previous inquiry, this one concluded that the design did not incorporate any new features which affected the airship's strength, and further maintained that "there
2720-433: The first jet aircraft and the first liquid-fueled rockets . After World War II, especially in North America, there was a boom in general aviation , both private and commercial, as thousands of pilots were released from military service and many inexpensive war-surplus transport and training aircraft became available. Manufacturers such as Cessna , Piper , and Beechcraft expanded production to provide light aircraft for
2788-642: The first aircraft to transport passengers and cargo over great distances. The best known aircraft of this type were manufactured by the German Zeppelin company. The most successful Zeppelin was the Graf Zeppelin . It flew over one million miles, including an around-the-world flight in August 1929. However, the dominance of the Zeppelins over the airplanes of that period, which had a range of only
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2856-409: The first passenger, Charles Furnas, one of their mechanics, on May 14, 1908. During the 1920s and 1930s great progress was made in the field of aviation, including the first transatlantic flight of Alcock and Brown in 1919, Charles Lindbergh 's solo transatlantic flight in 1927, and Charles Kingsford Smith 's transpacific flight the following year. One of the most successful designs of this period
2924-571: The first untethered human lighter-than-air flight on November 21, 1783, of a hot air balloon designed by the Montgolfier brothers . The usefulness of balloons was limited because they could only travel downwind. It was immediately recognized that a steerable, or dirigible , balloon was required. Jean-Pierre Blanchard flew the first human-powered dirigible in 1784 and crossed the English Channel in one in 1785. Rigid airships became
2992-415: The hull towards the stern. Both ends drooped. The R.38 then cracked open with men and objects dropping from the rupture. The two sections separated with the forward section catching fire followed by two colossal explosions. The two explosions broke windows over a large area with the flaming fore section falling rapidly followed by the aft section descending slowly. The remains fell into the shallow waters of
3060-406: The introduction of composite materials to make small aircraft lighter and faster. Ultralight and homebuilt aircraft have also become increasingly popular for recreational use, since in most countries that allow private aviation, they are much less expensive and less heavily regulated than certified aircraft. Simple balloons were used as surveillance aircraft as early as the 18th century. Over
3128-531: The introduction of the jet which permitted a major form of transport throughout the world. The word aviation was coined by the French writer and former naval officer Gabriel La Landelle in 1863. He originally derived the term from the verb avier (an unsuccessful neologism for "to fly"), itself derived from the Latin word avis ("bird") and the suffix -ation . There are early legends of human flight such as
3196-465: The knowledgeable officers who were reluctant to release an airship of unproven strength, egged on by an eagerness to return to America by Commander Maxfield. The R.38 made its first flight on 23–24 June 1921, when it flew registered as R.38 but bearing the US designation ZR-2; the seven-hour flight revealed problems with over-balance of the control surfaces. With the balance area of the top rudder reduced,
3264-532: The length reduced to 690 ft (210.31 m) due to the limited size of existing manufacturing sheds. The Armistice coupled with the assignment of airships from the admiralty to the Royal Air Force and a decision to nationalize the Shorts airship plant into the Royal Airship Works confused the matter of whom was responsible for what. Constructor-Commander Campbell became both Manager and Chief Designer of
3332-406: The manoeuvres made had weakened the hull. No blame was attached to anyone, as this was not part of the committee's remit. The R.38 disaster led to a rigorous investigation of the structure of airships preceding the design of the next two airships built in Britain, the R.100 and the more radical R.101 . What is curious is that the practice of having responsibility for design and ultimately judging
3400-497: The new middle-class market. By the 1950s, the development of civil jets grew, beginning with the de Havilland Comet , though the first widely used passenger jet was the Boeing 707 , because it was much more economical than other aircraft at that time. At the same time, turboprop propulsion started to appear for smaller commuter planes, making it possible to serve small-volume routes in a much wider range of weather conditions. Since
3468-412: The operation of aircraft, are reduced and controlled to an acceptable level. It encompasses the theory, practice, investigation, and categorization of flight failures, and the prevention of such failures through regulation, education, and training. It can also be applied in the context of campaigns that inform the public as to the safety of air travel. A maintenance, repair, and overhaul organization (MRO)
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#17327767474523536-551: The possibility of flying machines becoming practical. Lilienthal's work led to him developing the concept of the modern wing. His flight attempts in Berlin in 1891 are seen as the beginning of human flight and the " Lilienthal Normalsegelapparat " is considered to be the first airplane in series production, making the Maschinenfabrik Otto Lilienthal in Berlin the first air plane production company in
3604-424: The publication was acquired by Aviator Media. It was subsequently purchased by Momentum Media in 2020. Aviation Aviation includes the activities surrounding mechanical flight and the aircraft industry. Aircraft includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air aircraft such as hot air balloons and airships . Aviation began in
3672-615: The stories of Icarus in Greek myth, Jamshid and Shah Kay Kāvus in Persian myth, and the flying automaton of Archytas of Tarentum (428–347 BC). Later, somewhat more credible claims of short-distance human flights appear, such as the winged flights of Abbas ibn Firnas (810–887, recorded in the 17th century), Eilmer of Malmesbury (11th century, recorded in the 12th century), and the hot-air Passarola of Bartholomeu Lourenço de Gusmão (1685–1724). The modern age of aviation began with
3740-444: The transverses of the R.38 are only just strong enough, and have no factor of safety " . The airship was to be given a curtailed series of tests before being handed over to the U.S. Navy, who would fly it across the Atlantic. J. E. M. Pritchard , the officer in charge of flight testing, proposed to carry out 100 hours of flight testing, including flights in rough weather, followed by 50 more flown by an American crew before crossing
3808-603: The world support these manufacturers, who sometimes provide only the initial design and final assembly in their own plants. The Chinese ACAC consortium has also recently entered the civil transport market with its Comac ARJ21 regional jet. Until the 1970s, most major airlines were flag carriers , sponsored by their governments and heavily protected from competition. Since then, open skies agreements have resulted in increased competition and choice for consumers, coupled with falling prices for airlines. The combination of high fuel prices, low fares, high salaries, and crises such as
3876-426: The world. Lilienthal is often referred to as either the "father of aviation" or "father of flight". Early dirigible developments included machine-powered propulsion ( Henri Giffard , 1852), rigid frames ( David Schwarz , 1896) and improved speed and maneuverability ( Alberto Santos-Dumont , 1901) There are many competing claims for the earliest powered, heavier-than-air flight. The first recorded powered flight
3944-442: The years, military aircraft have been built to meet ever increasing capability requirements. Manufacturers of military aircraft compete for contracts to supply their government's arsenal. Aircraft are selected based on factors like cost, performance, and the speed of production. Aviation safety means the state of an aviation system or organization in which risks associated with aviation activities, related to, or in direct support of
4012-399: Was at the time no body in existence which could have been called in to advise on the structural strength of R.38." The technical Committee of Enquiry, chaired by Mervyn O'Gorman , concluded that no allowance had been made for aerodynamic stresses in the design , and that while no loads had been placed on the structure during testing that would not have been met in normal use, the effects of
4080-470: Was carried out by Clément Ader on October 9, 1890, in his bat-winged, fully self-propelled fixed-wing aircraft , the Ader Éole . It was reportedly the first manned, powered, heavier-than-air flight of a significant distance (50 m (160 ft)) but insignificant altitude from level ground. Seven years later, on October 14, 1897, Ader's Avion III was tested without success in front of two officials from
4148-788: Was designed for Britain's Royal Navy during the final months of the First World War , intended for long-range patrol duties over the North Sea . Four similar airships were originally ordered by the Admiralty , but orders for three of these ( R.39 , R.40 and R.41 ) were cancelled after the armistice with Germany and R.38 , the lead ship of the class, was sold to the United States Navy in October 1919 before completion. On 24 August 1921, R.38 (designated ZR-2 by
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#17327767474524216-618: Was directly attached to the hull. The cruciform tail surfaces were unbraced cantilevers and carried aerodynamically balanced elevators and rudders. The six Sunbeam Cossack engines, each driving a two-bladed pusher propeller, were housed in individual cars arranged as three pairs: one pair aft of the control car, one pair amidships, and the third pair aft. The United States Navy had decided that it wanted to add rigid airships to its fleet and originally hoped to get two Zeppelins as part of war reparations , but these had been deliberately destroyed by their crews in 1919 in actions connected with
4284-415: Was highly flammable and allowed static electricity to build up in the airship. Changes to the coating formulation reduced the risk of further Hindenburg type accidents. Although there have been periodic initiatives to revive their use, airships have seen only niche application since that time. There had been previous airship accidents that were more fatal, for instance, a British R38 on 23 August 1921, but
4352-531: Was informed that the Cardington, Bedfordshire works, recently built as a specialised airship production facility, was to be nationalised . Construction of R.38 started at Cardington in February 1919. It was intended to follow R.38 with orders for three airships of the same class: R.39 , identical to R.38 , to be built by Armstrong-Whitworth , and two others, R.40 and R.41 , of a design variant with
4420-477: Was investigated. An agreement was reached in October 1919 for its purchase for £300,000, and work on the airship was resumed. As work progressed the US Navy began checking the documentation given them by the British. Following significant girder failures during testing Commander Jerome Hunsacker and Charles Burgess raised questions over the strength of R.38 . Burgess concluded that "This investigation indicates that
4488-540: Was specified, to allow the airship to be used to escort surface vessels. Design work was carried out by an Admiralty team led by Constructor-Commander C. I. R. Campbell, of the Royal Corps of Navy Constructors. The construction contract was awarded to Short Brothers in September 1918 but cancelled on 31 January 1919 before work had been started. It was then re-ordered on 17 February: on the same day, Oswald Short
4556-551: Was the Douglas DC-3 , which became the first airliner to be profitable carrying passengers exclusively, starting the modern era of passenger airline service. By the beginning of World War II, many towns and cities had built airports, and there were numerous qualified pilots available. During World War II one of the first jet engines was developed by Hans con Ohain, and accomplished the world's first jet-powered flight in 1939. The war brought many innovations to aviation, including
4624-821: Was the Tenerife airport disaster on March 27, 1977, when 583 people died when two Boeing 747 jumbo jets, operated by Pan Am and KLM collided on a runway in Los Rodeos airport, now known as Tenerife North. An aviation incident is defined as an occurrence, other than an accident, associated with the operation of an aircraft that affects or could affect the safety of operations. Air traffic control (ATC) involves communication with aircraft to help maintain separation – that is, they ensure that aircraft are sufficiently far enough apart horizontally or vertically for no risk of collision. Controllers may co-ordinate position reports provided by pilots, or in high traffic areas (such as
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