What was found
FLT 123 - PILOT NOTED NR 1 ENGINE OIL PRESSURE DROPPING TWO PSI EVERY TEN MINUTES UNTIL OIL PRESSURE WARNING LIGHT ILLUMINATED AT 9 PSI, AT THIS TIME THE FLIGHT CREW SHUT DOWN NR 1 ENGINE AND FEATHERED AND PROPELLER USING EMERGENCY PROCEDURES, AND EMERGENCY WAS DECLARED WHICH DIVERTED THE AIRCRAFT TO (SDF) LOUISVILLE, KENTUCKY WHERE AN UNEVENTFUL LANDING WAS MADE. INSPECTION REVEALED TWO LOOSE NUTS ON ACCESSORY GEAR DRIVE. THE TWO NR 10 NUTS WERE TIGHTENED ENGINE RAN, NO LEAKS NOTED. AIRCRAFT RETURNED TO SERVICE. (W)