What was found
DURING TAKEOFF, WE NOTICED #1 ENGINE OIL PRESSURE WAS FLUCTUATING FROM 71-73 PSI. THESE FLUCTUATIONS WERE MOMENTARY. THIS CONTINUED OCCASIONALLY UNTIL CRUISE. PSI WOULD OCCASIONALLY HIT 73 DURING CRUISE. THIS WOULD BE MOMENTARY. PSI WAS NORMAL DURING DESCENT. ALL OTHER ENGINE INDICATIONS ON #1 SIDE WERE NORMAL AT ALL TIMES. REMOVED FROM SERVICE. PERFORMED GVI OF #1 ENGINE FOR OIL LEAKS, FOUND NO LEAKS, SERVICED #1 ENGINE OIL IAW Q400 AMM 12-10-71-612-802 & HS#12-0006. PERFORMED Q400 FIM TASK 79-00-00-810-803 AND Q400 AMM 71-00-00-780-801. OIL PRESSURE REMAINED NORMAL DURING OIL PRESSURE CHECK. AFTER OIL PSI CHECK PERFORMED GVI OF #1 ENGINE FOR OIL LEAKS, NO LEAKS OR DEFECTS WERE NOTED. ALSO PERFORMED Q400 FIM 79-00-00-810-804, FOUND NO DEFECTS ON CONNECTORS J54&P55. ENGINE OIL PRESSURE CHECK GOOD. RETURNED TO SERVICE.