What was found
ON 1/24/2026 N662AR, CYO662 WAS DEPARTING KSUA HEADING TO KNAS. DURING CLIMB, THE CAPTAIN NOTICED THE LH ENGINE OIL PRESSURE WAS FLUCTUATING. THE SCHEDULED FLIGHT WAS OVER WATER SO THE CAPTAIN ELECTED TO RETURN TO KSUA. LOCAL MAINTENANCE WAS CALLED TO INVESTIGATE THE ISSUE. ENGINE OIL LEVELS WERE CHECKED AND FOUND TO BE NORMAL. ENGINE RUNS COMPLETED WITH ALL INDICATIONS NORMAL. THE MECHANIC THEN SWAPPED OIL PRESSURE TRANSMITTERS AND RAN ENGINES AGAIN. ALL INDICATIONS WERE NORMAL. THE LH ENGINE OIL PRESSURE/TEMPERATURE INDICATOR WAS REPLACED AND ENGINE RUNS COMPLETED. ALL INDICATIONS FOUND TO BE NORMAL - NO DEFINITIVE CAUSE OF FLUCTUATION COULD BE FOUND. AIRCRAFT WAS RETURNED TO SERVICE AND HAS BEEN ON SEVEN FLIGHTS SINCE WITH NO OTHER ISSUES REPORTED.