The crash of a small plane in New York over the weekend killed all six on board — a physician couple and their accomplished children and partners — during a family trip to the Catskills.
It’s the latest in a series of aviation disasters at a time of heightened scrutiny of aircraft collisions and near-misses.

The most deadly was the collision of a passenger jet and a military helicopter over the Potomac River that that killed 67 people in January. In February, one airliner clipped another while taxi …