The Prototype of The world’s first ever jet airliner the Comet 1 first flew on 27 July 1949.
On 2 May 1952 , the De Havilland Comet 1 made its maiden flight, from London to Johannesburg. The de Havilland DH 106 Comet was the world’s first production commercial jetliner. Developed and manufactured by de Havilland at its Hatfield Aerodrome, Hertfordshire, United Kingdom headquarters, . It featured an aerodynamically clean design with four de Havilland Ghost turbojet engines buried in the wings, a pressurised fuselage, and large square windows. For the era, it offered a relatively quiet, comfortable passenger cabin and showed signs of being a commercial success at its 1952 debut.
However A year after entering commercial service the Comets began suffering problems, with three of them breaking up during mid-flight in well-publicised accidents. This was later found to be due to catastrophic metal fatigue in the airframes, not well understood at the time. The Comet was withdrawn from service and extensively tested to discover the cause; the first incident had been incorrectly blamed on adverse weather. However fatal design flaws, including dangerous stresses at the corners of the square windows and installation methods, were ultimately identified and As a result, the Comet was extensively redesigned with oval windows, structural reinforcement, and other changes. Rival manufacturers meanwhile heeded the lessons learned from the Comet while developing their own aircraft.
Unfortunately after these crashes sales of the Comet never fully recovered, however the improved Comet 2 and the prototype Comet 3 culminated in the redesigned Comet 4 series which debuted in 1958 and went on to have a productive career of over 30 years. During its production run The Comet was also adapted for a variety of military roles such as VIP, medical and passenger transport, as well as surveillance. The most extensive modification resulted in a specialised maritime patrol aircraft variant, the Hawker Siddeley Nimrod which remained in service with the Royal Air Force (RAF) until June 2011, over 60 years after the Comet’s first flight. Luckily Many examples of both aircraft have been preserved and can be viewed at various aerospace museums including RAF Cosford