Event Description
An aircraft collided with the ground after takeoff. During the subsequent landing, the aircraft nosed over.
Pilot Statement
The pilot reported that the aircraft lost power and felt sloppy at approximately 350 feet above ground level (AGL). He added power but the maximum obtainable engine RPM was 2000, as opposed to the expected 2300. The pilot attempted to drop the load, but the load remained with the aircraft. The hopper dump valves were operational.
Aircraft Weight
The aircraft was about 1000 lbs over its maximum gross weight.
Engine and Maintenance Findings
Post-incident examination revealed that the front row of spark plugs exhibited carbon deposits. The main oil screen had trapped heavy carbon deposits along with a small amount of ferrous metal.