Turkish Airlines moved forward with its fleet renewal despite the uncertain airline environment, recently announcing its intention to place an order for 25 widebody and 50 single-aisle aircraft plus 10 widebody and 10 narrowbody options.

Requests for proposals will be solicited from both Boeing and Airbus and Turkish said it is considering the A350 XWB, A330, 777 and 787 for the twinaisle order and the entire A320 and 737NG families (except the 737-600) for its narrowbody purchase.

It expects to begin taking delivery of the new aircraft in the second half of 2010, a schedule it said “will be the critical decision factor beside the price” when it places the order. It did not say when it would announce its decision nor did it give a deadline for the RFP.

“The need for the interim aircraft will be clarifi ed after the conclusion of the tender and the finalisation of the delivery dates,” it said, leaving open the possibility of “leasing under the best market condition[s].”

Turkish said it “will be ready to provide service when the global economy recovers with a more stable foundation while Turkey stands in the forefront by taking its market share to new heights.” The carrier currently operates a fleet of 115 aircraft.