[Turkish Airlines: decisions related to large aircraft orders have not yet been made but are very close to reaching an agreement with an aircraft manufacturer] Turkish Airlines Chairman Ahmet Bolat said in Istanbul on Monday that there were still about two months to go before a final decision on ordering up to 600 jets, including 400 single-aisle aircraft and about 200 wide-body aircraft. But Turkish Airlines is "very close" to reaching an agreement with an aircraft manufacturer. Ahmet Bolat said the airline plans to increase its Sydney and Melbourne routes via Singapore by the end of the year and may increase Detroit routes in November.