Panasonic Corp said on Thursday its avionics unit is being investigated by U.S. authorities under the Foreign Corrupt Practices Act (FCPA) and that it has recently begun talks with U.S. officials to resolve the matter. In a stock exchange filing, the Japanese electronics maker said Panasonic Avionics Corp, a major supplier of in-flight entertainment systems, is being probed by the Department of Justice (DOJ) and the Securities and Exchange Commission (SEC). Panasonic did not specify the nature of the investigation.