What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO DFW DUE TO A YELLOW HYDRAULIC RESERVOIR LOW LEVEL MESSAGE. THE AIRCRAFT LANDED SAFELY AT DFW WITHOUT FURTHER INCIDENT. MAINTENANCE TIGHTENED A LOOSE B-NUT ON #2 ENGINE PER AMM 29-13-49 (AALA202302102927) AND TIGHTENED A LOOSE SWIVEL FITTING ON THE RIGHT HAND MAIN LANDING GEAR DOOR PER AMM 32-31-38. (AALA202302107884) A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED.