As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT TRANSMISSION PRESSURE INDICATOR TURNED RED AND WENT DOWN TO 0, PIC DECLARED AN EMERGENCY TO WILMINGTON TOWER. PIC WENT INTO HOVER AND THE ALERT WENT BACK TO NORMAL FOR A MOMENT THEN WENT RIGHT BACK TO RED. PILOT LANDED SAFELY IN A FIELD, COMS CANCELED EMERGENCY WITH WILMINGTON TOWER. THE MECHANIC FOUND THE RIGHT OIL PRESSURE TRANSMITTER CONNECTOR DIRTY. CONNECTOR WAS CLEANED AND OPERATIONAL CHECKS WERE FOUND SATISFACTORY.