but the late president's son, his wife, caroline bissett kennedy, and his sister, lauren, never madenew series, "how it really happened" on hln. >> i'm in a cast. i break my ankle first weekend of the summer. i'm laid up for a couple weeks. >> he's seen boarding the plane on the night, the friday night, with crutches. and it immediately raises the question, was he in a fit state to manipulate the rudder controls on the plane? that turns the plane and turns the plane right. >> there was an automatic system which misgauged the weather and led forecasters to say nine miles visibility. in aviation terms, the weather forecast that jfk jr. got was just plain wrong. and it's that forecast that accounted for his death. >> reporter: "real housewives of new york city" star was close to the couple and married a kennedy's best friend and cousin. >> we were quite the foursome there for little while. >> reporter: she was one of the last to speak to caroline before the fatal crash. >> i said at the end, i love you. it stuck with me. i normally would say it back. of course, i didn't think that that