On July 13, 1995, a Grumman G-164A (registration N9949) was involved in an aviation accident near Simmesport, LA. Investigators recorded the probable cause as: THE LOSS OF ENGINE POWER AS RESULT OF THE FAILURE OF THE NUMBER 7 CYLINDER. A FACTOR WAS THE LACK SUITABLE TERRAIN FOR THE FORCED LANDING. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aerial application aircraft experienced engine power loss during initial takeoff climb. The pilot performed a forced landing in a rough field, resulting in the airplane nosing over and coming to rest inverted. Post-accident inspection found a cylinder valve area separation.
Incident Overview
During the initial takeoff climb from an airstrip, the pilot of an aerial application aircraft experienced a loss of engine power. In response, the pilot elected to continue straight ahead and execute a forced landing into a rough and uneven field.
Forced Landing and Nose-Over
As the airplane touched down and rolled through the uneven terrain, it nosed over and came to rest in an inverted position. The aircraft sustained damage during the event.
Post-Accident Findings
A post-accident investigation revealed that the top portion of the valve area for the number 7 cylinder had separated from the engine. No further details on the engine or aircraft were provided in the source.