Accident Overview
During the initial climbout from takeoff, a passenger reported feeling the airplane 'bump' several times. Air traffic control then instructed the pilot to turn. The passenger subsequently felt more bumping as the airplane descended into the trees.
Witness Observations
Ground witnesses observed the airplane pitching up and down while flying at a low altitude. They reported that the engine sounded as if it was running at full power.
On-Scene Investigation
An on-scene investigation revealed that the airplane's elevator trim was set to full nose-up. Additionally, the takeoff weight was found to be 196 pounds over the certificated gross weight.
Engine Test
The engine was removed and tested at the manufacturer's facility. During the test run, the engine produced 100 percent of its rated power.