Event Description
The pilot of a Beech 23 was cruising at 1,000 feet above ground level when a tapping noise from the engine was heard, accompanied by a partial loss of power. In response, the pilot elected to perform a precautionary landing in a landfill. Upon touchdown, the soft terrain caused the nose and right main landing gear to collapse.
Engine Examination
A post-crash examination of the engine identified a failed 7/16-inch exhaust valve in the number 3 cylinder. The engine had accumulated 2,010 hours of operation. The manufacturer recommends overhaul at 1,200 hours when using the 7/16-inch exhaust valve.
Maintenance Records
Review of available records did not indicate whether the engine had been overhauled in accordance with the manufacturer's recommendation. No records were found to confirm any maintenance beyond the initial build.