What was found
WHILE INFLIGHT FROM PANAMA CITY, FLORIDA THE LEFT ENGINE LOW OIL PRESSURE ANNUNCIATOR ILLUMINATED. THE OIL PRESSURE WAS BELOW 60 PSI. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT WAS RETURNED TO FIELD WITH NO FURTHER INCIDENT. THE CORRECTIVE ACTION WAS THE THE LEFT GAS GENERATOR AND THE POWER SECTION WAS REPLACED. THE TEARDOWN REPORT REVEALED THAT THE PROPELLER SHAFT HAS SEIZED AND THERE WAS NO OIL INDICATION ON THE DIPSTICK. THE CAUSE OF THE OVERHEATING DISTRESS TO THE PLANET GEAR `Y` OCCURRED FROM LACK OF LUBRICATION.