Turkish officials later put the death toll later rose to 34, although American officials said that one man survived the crash and was being treated.
"Thirty-four people were killed in the accident: an American, 28 Turks and the five crew. There is one survivor, who is seriously wounded," a source at the Turkish embassy in Baghdad told AFP newsagency.
Cahit Kirac, the governor of Adana, told CNN Turk television that the aircraft was carrying 29 Turks, one American and a crew comprising a Russian, a Ukrainian and three Moldovans.
The aircraft belonged to Moldova's Aerian Tur Airlines and the workers on board were from the Turkish construction company Kulak, the Turkish foreign ministry said.