What happened
During the takeoff phase, the aircraft began its takeoff roll and traveled approximately 200 to 300 feet before lifting off the ground. Upon becoming airborne, the plane maintained an excessively high nose-up attitude. The aircraft performed a right-hand turn followed by a left-hand bank, but ultimately lost altitude and struck the ground while still in a nose-high position.
The aircraft was carrying a heavy load consisting of eight 55-gallon drums of fuel. These barrels were positioned on their sides and secured using two cargo straps: one running fore and aft, and another positioned diagonally across the drums. The total weight of this cargo was 2,863 pounds. The pilot, who was the only person on board, was killed in the accident.
Findings
Investigations into the wreckage revealed that the aircraft's maximum certified gross weight had been exceeded by 324.8 lbs. The cargo straps were destroyed by a post-impact fire, leaving the fuel barrels scattered throughout the cabin and cargo compartment. While three cargo hooks remained attached to their respective tie-down rings, one hook and its associated ring were missing from the scene.
A significant contributing factor was the unapproved installation of the tie-down rings. The rings used for the cargo were found to be a modification that did not comply with manufacturer specifications, as such changes required a supplemental type certificate. Furthermore, the strength rating of the tie-down rings was only 1,600 pounds, which was insufficient for the 2,863-pound cargo load.