We report a rare case of aortic insufficiency due to the tears of the aortic cusps during percutaneous transluminal coronary angioplasty (PTCA). A 62-year-old man successfully underwent simultaneous aortic valve replacement and coronary artery bypass grafting. The post operative course was uneventful, and the patient was discharged in a stable condition. This report emphasizes the need to consider the possibility of acquired aortic insufficiency due to the complication of PTCA.