Using this system, a large number of operators could access information simultaneously, so the ticket agents could be told via phone if a seat was available. This computer consisted of a single magnetic drum, each memory location holding the number of seats left on a particular flight. Īmerican Airlines had already attacked the problem to some degree, and was in the process of introducing their new Magnetronic Reservisor, an electromechanical computer, in 1952 to replace the card files. To handle more queries the only solution was to add more layers of hierarchy to filter down requests into batches.
It was limited to about eight operators because that was the maximum that could fit around the file. The system also had limited room to scale. This part of the process was not all that slow, at least when there were not that many planes, but the entire end-to-end task of looking for a flight, reserving a seat, and then writing up the ticket could take up to three hours in some cases, and 90 minutes on average. When a seat was booked, the operators would place a mark on the side of the card, and knew visually whether it was full.
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In this manual system, a team of eight operators would sort through a rotating file with cards for every flight. Before the introduction of SABRE, the airline's system for booking flights was entirely manual, having developed from the techniques originally developed at its Little Rock, Arkansas, reservations center in the 1920s. In the 1950s, American Airlines was facing a serious challenge in its ability to quickly handle airline reservations in an era that witnessed high growth in passenger volumes in the airline industry. The company's history starts with SABRE ( Semi- automated Business Research Environment), a computer reservation system which was developed to automate the way American Airlines booked reservations. Sabre is headquartered in Southlake, Texas, and has employees in various locations around the world.
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