What was found
DURING PRE-FLIGHT INSPECTION, IT WAS NOTICED THE HORIZONTAL STABILIZER HAD A NOISE COMING FROM THE ATTACHING POINTS. GAIN ACCESS AND VISUALLY INSPECTED ATTACHING POINTS WITH NO DEFECT NOTED, AFTER FURTHER INSPECTION IT WAS NOTICED THAT THE FWD SPAR ASSEMBLY WAS CRACK AT (3) DIFFERENT POINTS. AFTER REMOVING THE HORIZONTAL STABILIZER FOR FURTHER INSPECTION. NOTICED THE CENTER SKIN WAS ALSO CRACK. REMOVED CENTER SKIN AND FWD SPAR ASSEMBLY AND REPLACED WITH NEW, RE-INSTALLED HORIZONTAL STABILIZATOR AND PERFORMED TEST FLIGHT SATISFACTORY.