article_snippet.sent: Blamed initially on 'engine .
article_snippet.sent: I began wiping the instrument board and accidentally activated the . '
article_snippet.sent: emergency slat' button,' which automatically turned off the . automatic pilot and a plane began losing altitude, Zoric said .
article_snippet.sent: automatic pilot took over command, managed to pull a plane up . and sought permission to turn back to Belgrade, Zoric added.
article_snippet.sent: the . automatic pilot . said that one of the engines then stopped working but was .
article_snippet.sent: restarted on the way back to the airport.
article_snippet.sent: An investigation revealed that the . automatic pilot spilled coffee on the instrument panel and turned the autopilot off as Nikolic wiped the autopilot down .