What was found
AFTER LANDING AND WHILE APPLYING BRAKES, AIRCRAFT PULLS NOTICABLY TO THE RIGHT. ALSO, RIGHT BRAKE PEDAL FEELS "SOFT". FOUND LOOSE B-NUT ON MASTER CYLINDER LOCATED UNDER F/O'S FLOOR PANEL. RESECURED B-NUT, LEAK CHECKS OK. NO FURTHER DEFECTS NOTED IAW 32-43-60.