What was found
DFW - FLT 527 - EN ROUTE DFW-SLC, RIGHT SYSTEM HYDRAULIC PRESSURE LOW LIGHT ILLUMINATED. EMERGENCY DECLARED AND AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. FOUND NO HYDRAULIC LEAKS AND BOTH HYDRAULIC RESERVOIRS WERE FULL. REPLACED RIGHT HYDRAULIC SYSTEM LOW PRESSURE SWITCH. ALSO, REPLACED RIGHT HYDRAULIC PRESSURE TRANSMITTER. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)