Cis518 Assignment 1

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CIS518 Assignment 1 Submitted by: Mohammad Shahriar Professor: Dr. Edwin Otto Strayer University EXERCISES - 1 PILOT’S COMPUTER ERROR CITED IN PLANE CRASH. AMERICAN AIRLINES SAYS ONE-LETTER CODE WAS REASON JET HIT MOUNTAIN IN COLOMBIA. Dallas, Aug. 23—The captain of an American Airlines jet that crashed in Colombia last December entered an incorrect one-letter computer command that sent the plane into a mountain, the airline said today. The crash killed all but four of the 163 people aboard. American’s investigators concluded that the captain of the Boeing 757 apparently thought he had entered the coordinates for the intended destination, Cali. But on most South American aeronautical charts, the one-letter code for Cali is the same as the one for Bogota, 132 miles in the opposite direction. The coordinates for Bogota directed the plane toward the mountain, according to a letter by Cecil Ewell, American’s chief pilot and vice president for flight. The codes for Bogota and Cali are different in most computer databases, Ewell said. American spokesman John Hotard confirmed that Ewell’s letter, first reported in the Dallas Morning News, is being delivered this week to all of the airline’s pilots to warn them of the coding problem. American’s discovery also prompted the Federal Aviation Administration to issue a bulletin to all airlines, warning them of inconsistencies between some computer databases and aeronautical charts, the newspaper said. The computer error is not the final word on what caused the crash. The Colombian government is investigating and is expected to release its findings by October. Pat Cariseo, spokesman for the National Transportation Safety Board, said Colombian investigators also are examining factors such as flight crew training and air traffic control. The computer

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