Some Fair Use Excepts:
"The main cause was a federal decision at the start of the year to remove the limit at Kennedy on the number of arrivals and departures between 3 p.m. and 8 p.m. Not surprisingly, airlines rushed to offer new flights, quickly clogging the airspace, runways, taxiways and gates at Kennedy. In many cases, smaller regional jets that seat only up to 70 passengers account for many of the new flights, yet the demands they place on air traffic controllers are similar to those of larger jets."
"In the case of Delta, flights on smaller regional jets account for about 61 percent of Delta’s departures to 86 cities from Kennedy."
"International carriers, which bunch their departures for Europe and the Middle East at night, are also frustrated because their jumbo jets must also jockey with regional jets on the taxiways."
"The Port Authority is trying to persuade the airlines to cut the number of flights and use larger jets by reminding them of how delays affect their bottom line."