What was found
IN FLIGHT, LOW OIL PRESSURE ILLUMINATED NR 1 ENGINE OIL PRESSURE FLUCTUATED AT CLIMB AND IDLE SETTINGS. AC RETURNED TO FIELD AT 32,000 FT. PRESSURE DROPPED TO 25 PSI THROTTLE BACK PRESSURE TO 60 PERCENT AT 33,000 FT PRESSURE FLUCTUATED 40 PERCENT-50 PERCENT-45 PERCENT- 55 PERCENT. FOUND CRANKING PAD COVER OFF, REINSTALLED COVER. ADDED 1 QUART OIL, IAW AMM 72-00-00. PERFORMED ENGINE RUNS IAW AMM 71-00-00. NO DEFECTS NOTED.