What was found
BNA - FLT NR 2092 - EN ROUTE DFW/BNA, DURING CRUISE HYDRAULIC SYSTEM 1 LOW QUANTITY INDICATED ON MFDU. HYDRAULIC SYSTEM 1 QUANTITY INDICATED BETWEEN 35 AND 36 PERCENT. DEACTIVATED SYSTEM 1 PUMP 1 AND 2, AND AIRCRAFT PROCEEDED TO BNA. ACCOMPLISHED ALTERNATE FLAP AND LANDING GEAR EXTENSION AND AIRCRAFT LANDED BNA WITHOUT INCIDENT. RESECURED LOOSE 'B' NUT AT NR 1 PRIORITY VALVE. SERVICED HYDRAULIC SYSTEM. HYDRAULIC SYSTEM 1 LEAK AND GROUND CHECKED NORMAL OPERATION. (M)