Excerpt from Improving the Safety of Air Traffic Control at Chicago's O'hare International Airport; Faa Oversight: Fourth Report by the Committee on Government Operations, Together With Additional Views June 29, - This incident involved an Air Wisconsin F-27 and a United 727. The Air Wisconsin flight had departed from o'hare on a northeast course. Within minutes, the United 7 27 was cleared for takeoff with a different heading. When the Air Wiscon sin flight was one mile northeast of the airport it was directed by a controller to turn right, which placed it on the same course as the trailing United plane. The United jet then began to overtake the slower turbo prop plane until the error was detected by an auto matic conflict alarm system. July 2, - This operational error resulted after two passenger jets had been cleared by different controllers to depart o'hare on separate runways early in the morning. The error occurred because the two controllers did not coordinate with each other. One control ler cleared a United' 737 to fly a noise abatement heading after takeoff while another controller cleared a Western Airlines 7 27 for takeoff with an immediate left turn, under a normal non-noise abatement departure procedure. As a consequence, the two jets came within only feet of each other horizontally and 400 feet vertically, two miles west of the airport. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.