Incident Description
Ten minutes after takeoff, the engine oil annunciator light illuminated. This occurred following an engine installation and completion of an annual inspection. Shortly thereafter, the engine oil pressure dropped to zero. Investigation determined that the oil had drained from an unapproved quick drain plug that had been installed on the engine oil pan by the mechanic.
Cause of Oil Loss
The loss of oil was caused by contact between the nose landing gear drag link and the quick oil drain plug during the gear retraction cycle. This contact resulted in the plug being dislodged or opened, leading to the rapid loss of engine oil.
Forced Landing and Damage
With the engine losing all power, the flight crew attempted a forced landing. The airplane was brought down in a soft, freshly plowed field. During the landing, the airplane sustained substantial damage.