The NTSB just released new details on the Learjet that left AUSTIN for the Bahamas and crashed in Florida, killing all NINE people on board. At 35,000 feet, the crew reported ice and moderate turbulence. They said it was manageable. They asked to climb to 37,000 feet and got the approval. Less than 30 seconds later, they called MAYDAY. "We are in an overspeed condition, descending." Two crew members and seven passengers, and none of them made it home.