ten miles per minute, 7. 1 miles corresponds to. 71 minutes of flight. Therefore, the eastbound aircraft reaching J at time t will face a conflict if a northbound plane passes hrough J over the interval(t-.71, t+ 71). In consequence, P(EE)=1-P(EE*)=1-exp(-1.42入E) This exercise assumed the absence of air-traffic control. and random arrivals at j under Poisson processes. In reality, aircraft arrival times at junctions would never be left to chance alone. These calculations suggest the frequency at which potentially hazardous situations would arise based on activity levels in the air-traffic system(and thus, the magnitude of the task facing of the task facing the controllers). The agnificence with which the controllers perform this task is suggested by a statistic:over he 1990s, 5 billion passengers travelled in commercial jet aircraft in the United States The number killed in midair collisions was zeroten miles per minute, 7.1 miles corresponds to .71 minutes of flight. Therefore, the eastbound aircraft reaching J at time t will face a conflict if a northbound plane passes through J over the interval (t-.71,t+.71). In consequence, P(EE) = 1 - P(EE*) = 1 - exp(-1.42E) This exercise assumed the absence of air-traffic control, and random arrivals at J under Poisson processes. In reality, aircraft arrival times at junctions would never be left to chance alone. These calculations suggest the frequency at which potentially hazardous situations would arise based on activity levels in the air-traffic system (and thus, the magnitude of the task facing of the task facing the controllers). The magnificence with which the controllers perform this task is suggested by a statistic: over the 1990’s, 5 billion passengers travelled in commercial jet aircraft in the United States. The number killed in midair collisions was zero