Turkish Airlines is to convert a batch of five Boeing 777-300ER options into a firm order for the twinjet type.
The Star Alliance airline states, in a stock exchange filing, that the aircraft covered by the exercised options will be delivered in 2016-17.
Turkish Airlines finalised an order for 15 777-300ERs in December last year, which included options on five.
All 777-300ERs are powered by General Electric GE90 engines.
Source: Air Transport Intelligence news