Boeing and Turkish Airlines have finalized a firm order for 15 777-300ER (Extended Range) airplanes worth $4.7bn at list prices. The agreement, first announced in October as a commitment, also includes options for five additional 777-300ERs. Turkish Airlines’ fleet currently includes 12 777-300ERs, the first of which Boeing delivered in October 2010. Over the past two years, these airplanes have formed the backbone of Turkish Airlines’ long-haul operations. This latest order will enable the Turkish flag-carrier to continue to serve new destinations worldwide.