As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER LEVEL OFF AT FL350, LT ENGINE OIL PRESSURE DROPPED RAPIDLY TO THE 25 - 30 PSI RANGE. INDICATOR BAR TURNED AMBER. OIL PRESSURE REMAINED IN THIS RANGE FOR THE REST OF THE FLIGHT TO LANDING. OIL PRESSURE INDICATOR BAR TURNED WHITE WHEN THROTTLE RETARDED TO IDLE FOR LANDING. TROUBLESHOT TO A BAD OIL TRANSMITTER. REMOVED AND REPLACED LT ENGINE OIL TRANSMITTER. RAN ENGINE AND OPS AND LEAK CHECKED. CHECKS GOOD. WORKED IAW MM 79-31-01.