By Lidia Kelly and Christian Lowe MOSCOW (Reuters) - All 62 people aboard a passenger jet flying from Dubai to southern Russia were killed when their plane crashed on its second attempt to land at Rostov-on-Don airport on Saturday, Russian officials said. Russia's emergencies ministry said the aircraft, a Boeing 737-800 operated by Dubai-based budget carrier Flydubai, crashed at 03:50 (0030 GMT). "The aircraft hit the ground and broke into pieces," the Investigative Committee of Russia said in a statement on its website.