As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING AT A SCENE TO PICK UP A PATIENT, THE PILOT NOTICED THE NR 1 ENGINE OIL PRESSURE INDICATION DROP TO 0 PSI. THE PILOT IMMEDIATELY SHUTDOWN ACFT, AND CALLED MX. MX VERIFIED THE DISCREPANCY. INSPECTED THE ASSOCIATED WIRING AND ALSO REMOVED, CLEANED, AND RE-INSTALLED THE CONNECTOR AT THE REAR OF THE 14 DATA PACK INSTRUMENT CLUSTER. THE PILOT THEN PERFORMED A GROUND RUN ON THE NR 1 ENGINE. THE OIL PRESSURE INDICATION WAS NORMAL AND THE ACFT WAS RETURNED TO SERVICE.