What was found
PILOT REPORTED DURING CRUISE FLIGHT MAIN GEARBOX OIL PRESSURE INDICATED 0.1 BAR. MECHANIC TROUBLESHOT SYSTEM, CLEANED OIL PRESSURE SENSOR, INSPECTED AND CLEANED CONNECTOR TO SENSOR. PERFORMED OIL PRESSURE SENSOR FUNCTION CHECK WITH NO DEFECTS AND PERFORMED GROUND RUN WITH NO DEFECTS NOTED. BIS