What was found
NR 1 ENGINE LOST 7 QTS OF OIL AFTER 35 MINUTES OF FLYING. CREW COMPLETED PRECAUTIONARY NR 1 ENGINE SHUTDOWN, CONTINUED TO FOR EMERGENCY LANDING. MAINTENANCE INSPECTED AND FOUND A LOOSE BOLT ON ACCESSORY GEAR BOX PLUG, RESECURED BOLT AND PLUG, OPS AND LEAK CHECK GOOD.