Passengers usually save their applause for when the plane lands, but on a United flight Saturday, they were clapping before the aircraft even left the ground. That's because United pilot David ...

which leads to delays and speed reductions as more planes converge on the limited, viable flight paths. This is also why a flight from New York to Los Angeles might end up over the Gulf of Mexico ...

Existing data links only report ocean-crossing aircraft positions every 14 minutes ... of planes that have deviated from an agreed flight path, allowing early intervention to prevent situations ...