Wyle said Tuesday Melton, who has held the president and CEO titles for nine years, will continue to serve as chairman of the board of directors at the El Segundo, Calif.-based company.
“This decision was made as part of our planned succession process, which has been implemented over the last two years, ” Melton said.
Wiederkehr joined Wyle’s executive team in 2005 and has held roles with responsibility over mergers and acquisitions,  planning activities, contracts, procurement, legal, security,  environmental, health and safety functions.
He led the day-to-day operations of the company’s test, engineering and research division between 2008 and 2011 and has served as a member of URS Corp.’s corporate strategy group .
Melton served as president of URS’ EG&G division, Â CEO of EG&G and president of several aerospace component and sub-system manufacturers that were ultimately acquired by BAE Systems.