Academic Reading — Test 166

Reading passage

When an aircraft is lost, investigators rarely have living witnesses to tell them what went wrong. The modern flight recorder, popularly known as the "black box", was conceived to fill precisely this gap. Its origins lie not in a great aviation laboratory but in the work of a single Australian scientist, David Warren, who pursued the idea in Melbourne during the 1950s against considerable indifference. Warren's invention would eventually become standard equipment on commercial aircraft around the world, yet the road from his early sketches to international acceptance was long and frequently discouraging. Warren's interest in the problem was partly personal. As a young boy he had lost his father in an air crash off the coast of Australia in 1934, an event that left a lasting impression on him. By the early 1950s he was employed as a research scientist at the Aeronautical Research Laboratories, a defence establishment in Melbourne, where he was assigned to investigate the causes of accidents involving the de Havilland Comet, the world's first jet airliner. Several of these aircraft had broken up in flight for reasons that were not understood, and the absence of any reliable record of the final moments before each disaster made the inquiries enormously difficult. It occurred to Warren that a device capable of storing the instrument readings and the voices of the crew would transform such investigations. The technical insight that made his idea practical came from an unexpected direction. At a trade exhibition Warren had seen one of the first miniature recorders being marketed for business use, and he realised that a similar mechanism, suitably protected, could capture the information he wanted. In 1956 he produced a working prototype that recorded both flight data and cockpit conversation onto a single steel wire, and he set out his thinking in a short report titled "A Device for Assisting Investigation into Aircraft Accidents". The proposal, however, met with little enthusiasm at home. Aviation authorities saw no pressing need for it, pilots objected that the recording of their conversations amounted to surveillance, and some officials dismissed the concept as impractical. For several years the prototype attracted almost no official support in Australia. Recognition came instead from abroad. In 1958 a senior British aviation official visiting the laboratory happened to see Warren's device and was immediately impressed by its potential. Warren was invited to demonstrate the recorder in the United Kingdom, where it was received with far greater interest than it had ever enjoyed in his own country. British manufacturers began to develop the idea commercially, and the principle gradually gained acceptance among the world's aviation regulators. Australia itself was eventually prompted to act after a fatal crash in Queensland in 1960, when the inquiry that followed recommended that recorders be fitted to aircraft. The country thus became one of the first to make the equipment compulsory, somewhat ironically given the earlier coolness towards the man who had invented it. It is worth noting that the familiar name "black box" is something of a misnomer. The recorders are in fact painted bright orange so that they can be located more easily among wreckage, and they are designed to survive conditions that would destroy almost anything else. Modern units are built to withstand intense fire, enormous impact forces and prolonged immersion in deep water, and they are normally installed in the tail of the aircraft, the section most likely to remain intact after a crash. Two separate recorders are commonly carried: one preserves the technical data from the aircraft's systems, while the other captures the sounds and voices within the cockpit. Together they allow investigators to reconstruct the sequence of events leading to an accident with a precision that would have astonished early aviators. Warren himself received little reward for his work during his most productive years, and he never patented the invention, with the result that he gained no financial benefit from its worldwide adoption. Formal recognition arrived only late in his life, when his contribution to aviation safety was at last publicly honoured. He died in 2010, and in a fitting tribute the casket at his funeral was labelled "Flight Recorder Inventor: Do Not Open". The countless lives that have been saved, and the accidents that have been prevented, by the lessons drawn from his device stand as a far more enduring memorial than any award. What began as one scientist's response to a personal loss has become an indispensable instrument of modern flight.