Safety Spotlight done it times a million BY DAVID JACK KENNY EXPERIENCE IS GENERALLY COUNTED A GOOD THING, AND BOTH TEACHING AND AVIATION ARE FIELDS IN WHICH IT'S PARTICULARLY PRIZED. EVEN TO THOSE WITH NATURAL TALENT, TEACHING IS IN PART A LEARNED SKILL-AND IN THE AIR, HAVING SEEN HAZARDOUS SITUATIONS OFTEN ENOUGH TO RECOGNIZE THEM BEFORE THEY DEVELOP ADDS A WELCOME MARGIN FOR ERROR.