ISTANBUL, Türkiye — Turkish Airlines and CFM International have signed a memorandum of understanding for more than 300 LEAP-1B engines, including spares, alongside a much broader servicing package and support for a future engine maintenance facility in the country.

The proposed purchase would power 100 firm and 50 option Boeing 737 MAX aircraft announced in September. The memorandum was announced on 16 October; it is a planned engine purchase rather than a statement that all the engines have been delivered.

The larger number in the agreement concerns maintenance. A proposed long-term service agreement would cover more than 600 LEAP-1B engines across Turkish Airlines and AJet. That scope includes engines associated with earlier orders and deliveries, spares, leased aircraft and potential options — it does not mean 600 newly purchased engines.

For the airlines, the package links fleet expansion with the support needed to keep aircraft in service. The memorandum also includes a material services agreement intended to support a future engine maintenance, repair and overhaul facility in Türkiye. The announcement describes that facility as a future development, not an operating workshop.

CFM, the joint venture between GE Aerospace and Safran Aircraft Engines, supplies the LEAP-1B that powers the 737 MAX. The proposed arrangements would extend its relationship with Turkish Airlines beyond engine supply into longer-term fleet support.