SunExpress Airlines has selected Lufthansa Technik to provide engine MRO (Maintenance, Repair and Overhaul) services for its Boeing 737s. The five-year agreements were signed at the airline’s headquarters in Antalya. The contracts cover CFM56-7B engines on Boeing 737-800 aircraft and CFM LEAP-1B engines on the Boeing 737-8 fleet, supporting fleet operations.
Under a five-year agreement, SunExpress will route Boeing 737 engines to Lufthansa Technik’s engine service facilities in Hamburg, Germany. The workshops will perform repairs, maintenance, full overhauls, and performance restoration visits. The first engine inductions are scheduled for Q1 2026. If additional capacity is required, Lufthansa Technik may also use its XEOS joint venture in Poland to support SunExpress engine services.
“This strategic partnership reinforces our commitment to maintaining the highest standards of reliability and performance across our Boeing 737 fleet,” said Cemil Sayar, chief operating officer at SunExpress. “By covering both our legacy CFM56-7B engines and the latest-generation LEAP-1B engines, the agreement supports our fleet development while ensuring high-quality MRO services. We greatly value Lufthansa Technik’s proven expertise and look forward to continuing our close cooperation in the years ahead.”
“The rollover to the latest-generation types such as the LEAP-1B engine is progressing steadily, but its venerable CFM56-7B predecessor is also still going strong and creating demand for MRO capacity. Thus, we are pleased that we can offer SunExpress our enormous expertise for both generations of Boeing 737 powerplants,” said Harald Gloy, chief operations officer at Lufthansa Technik. “I’d like to thank our valued customer for its trust in our services and look forward to this new chapter in our journey together.”
The engine services contracts build on prior cooperation between the two companies. In 2024, Lufthansa Technik provided shop-level troubleshooting and completed an engine performance restoration on a SunExpress CFM56-7B. The companies also work together on consumables and expendables (C&E) support, covering parts used in routine maintenance. SunExpress uses the maintenance & engineering software AMOS, part of Lufthansa Technik’s digital tech ops, to manage maintenance planning and technical records.
Source: Lufthansa Technik
About Lufthansa Technik
Lufthansa Technik provides maintenance, repair, and overhaul services for aircraft, engines, and components. The company serves airlines, aircraft leasing firms, government operators, and VIP aviation customers. Its services include aircraft modification, line maintenance, component support, and landing gear maintenance. Lufthansa Technik also delivers technical services for commercial, business, and special mission aircraft. The company was founded in 1995 and is headquartered in Hamburg, Germany. It operates a global network of subsidiaries and maintenance facilities supporting a range of aircraft types. Lufthansa Technik works with aircraft operators, lessors, and OEMs to maintain fleet reliability and regulatory compliance. Its customers span civil aviation and defense-related operations. The company adapts its service offerings to evolving aircraft technologies and operational requirements. Lufthansa Technik serves more than 800 customers worldwide. It employs approx. 24,500 people globally.
About SunExpress
SunExpress is a Turkish-German airline operating scheduled and charter passenger flights across Europe, North Africa, and the Mediterranean. The airline was founded in 1989 as a joint venture between Turkish Airlines and Lufthansa and began operations in 1990. SunExpress focuses on leisure and tourism travel, carrying passengers between European cities and destinations in Türkiye. It also operates domestic flights within Türkiye, serving major and regional markets. The airline supports the aviation and tourism industries through passenger transport services for individual travelers, tour operators, and travel agencies. Its headquarters are in Antalya, Turkey, with a secondary headquarters in Frankfurt am Main, Germany. SunExpress employs approx. 5,000 people worldwide.