Accident Details
The pilot of the accident airplane replaced its vacuum pump on the day of the accident. During a flight to a nearby airport, the engine lost the majority of its oil. Upon arrival at the destination airport, the engine was examined to determine the source of the leak. According to witness statements, the vacuum pump had been installed incorrectly. The discrepancy was corrected, and the pilot added 4 quarts of oil to the engine before attempting to return to his home airport.
Engine Problems
During the initial phase of the return flight, the engine overheated, prompting the pilot to turn back to the departing airport. After landing, he purchased more engine oil and serviced the engine to the full level. Several people suggested that the pilot have the engine further examined, but he declined, stating that he had "Get-Home-Itis." Despite the advice, the pilot took off again for his home airport. However, during the initial climb, the engine lost all power.
Aftermath
The pilot ditched the airplane in a nearby river in a flat attitude, where it submerged. Examination of the wreckage revealed that the No. 4 engine piston had separated from the crankshaft. The pilot did not hold an airframe and powerplant certificate.