The FAA is continuously trying to improve safety, and as part of that, they've released their top 10 causes of fatal GA accidents, with a specific accident for each type.
10) Thunderstorms Or Windshear
Weather is obviously one of the most hazardous parts of flying. This photo below is a Cessna 210 that flew into a level 6 thunderstorm. The pilot at the controls was Scott Crossfield, an accomplished Naval test pilot, and the first pilot to fly twice the speed of sound. Before he departed, he received a weather briefing, however he didn't get weather updates during his flight. The airplane broke apart in-flight, with wreckage found at three different locations.