ISTANBUL (Reuters) - Turkish airline Atlasglobal on Monday said flights out of Copenhagen had resumed as normal, after security checks found  nothing negative  following a threat to its planes.  After receiving notice concerning the Atlasglobal flights in Copenhagen Airport, security units were contacted,  Atlasglobal said in a statement.  Necessary security measures were taken, and security units conducted necessary inspections. Nothing negative was encountered. We would like to inform the public that our flight operations in Copenhagen are back to their routine course,  it said. (This version of the story was refiled to fix typo in paragraph three) 