What was found
MIA - FLT 1628 - FL310, OIL QTY NR 1 ENGINE DROPPED TO .5 GALLON, OK OIL AND SUBSEQUENT ENGINE DAMAGE. PERFORMED PRECAUTIONARY ENGINE SHUTDOWN AS EPR ABNORMAL CHECKLIST. AFTER SHUTDOWN, N1 25 PERCENT, N2 40 PERCENT, OIL PRESS 21 PSI. REMOVED OIL SCREEN AND INSPECTED VISUALLY. NO DEFECTS NOTED. REINSTALLED OIL SCREEN. SERVICED ENGINE FULL WITH 2 QTS OIL. PERFORMED ENGINE RUN. ALL PARAMETERS NORMAL. NO LEAKS NOTED. AIRCRAFT RETURNED TO SERVICE. NO FURTHER REPORTS. MOMENTARY QUANTITY INDICATION MALFUNCTION. (M)