Turkish Airlines has decided to purchase up to 75 Boeing 787s, deliveries of which will run over 2029-34,  and is also planning to take up to 150 737 Max jets.

The company is taking 50 firm 787s and placing options on another 25.

Turkish Airlines’ firm order will be a mix of 35 787-9s and 15 of the larger -10 variant, according to Boeing.

Turkish has yet to reach a decision on an engine selection, but is conducting negotiations with Rolls-Royce, for the Trent 1000, and GE Aerospace for the GEnx-1B.

These talks also include maintenance agreements for spares and servicing.

Turkish says the Max order – for which negotiations with Boeing have been “completed” – is subject to completion of engine discussions with CFM International, which exclusively supplies the Leap-1B.

If firmed, the 737 agreement will comprise the Max 8 and Max 10 versions of the twinjet.

The carrier says the fleet deals are part of a growth objective set out in its strategic business plan.

Chair Ahmet Bolat says the expansion will “enhance our operational capabilities” and contribute a ”significant element” of the airline’s vision to increase its fleet to 800 aircraft.

Turkish says that, as a result of the renewal plans, its entire fleet will comprise “new-generation” aircraft by 2035. Boeing states that the agreement will double its fleet of models from the US airframer.

Disclosure of the 787 and 737 Max deals follows Turkish president Recep Tayyip Erdogan’s visit to Washington this week to meet with US president Donald Trump.