The paper presents safety data for the period 1977--86 from more than 30 U.S. domestic airlines and 80 international flag carriers. These statistics are examined in conjunction with others from an earlier MIT study about the previous two decades. The primary safety measure used is "death risk...

Airport capacity could increase if, even during inclement weather, independent landings could occur on parallel runways only about half a mile apart. A key question about such operations is whether the collision risk they entail is acceptably low. Pursuing that issue, we explore a method for...