According to the pilot, he was at 6,500 feet mean sea level (msl) when he encountered a dark cloud. The pilot decided to descend to 4,500 msl through a “hole” in the clouds and when he “popped” out of the cloud he realized he was going to impact trees. He pulled back on the yoke and the airplane subsequently impacted trees and terrain. A postaccident examination of the airplane by a Federal Aviation Administration inspector revealed the left wing and empennage had separated from the airplane post-impact. The pilot reported no pre-impact mechanical malfunctions or failures that would preclude normal operations.