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SunExpress Partners with Lufthansa Technik for CFM56 and LEAP Engine Maintenance

SunExpress Partners with Lufthansa Technik for CFM56 and LEAP Engine Maintenance
European leisure airline SunExpress has formalized two extensive five-year maintenance, repair, and overhaul (MRO) agreements with Lufthansa Technik, encompassing the entire engine fleet of its Boeing 737 aircraft. These contracts cover both the CFM56-7B engines powering SunExpress’s current Boeing 737-800s and the advanced CFM LEAP-1B engines installed on its growing fleet of 737-8 models.
Strengthening Capabilities Across Engine Generations
The collaboration marks a strategic advancement for Lufthansa Technik, reinforcing its stronghold in the established CFM56 market while expanding its presence in the rapidly developing LEAP-1B segment. The majority of maintenance activities will be carried out at Lufthansa Technik’s Hamburg facilities, supplemented by additional capacity and operational flexibility through the XEOS joint venture with GE Aerospace in Poland.
Cemil Sayar, Chief Operating Officer at SunExpress, highlighted the significance of the partnership in maintaining operational excellence, stating, “This strategic partnership reinforces our commitment to maintaining the highest standards of reliability and performance across our Boeing 737 fleet.” Harald Gloy, Chief Operations Officer at Lufthansa Technik, underscored the importance of supporting both legacy and next-generation engine technologies. He noted, “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… we are pleased that we can offer SunExpress our enormous expertise for both generations.”
Navigating Industry Challenges and Future Outlook
As SunExpress continues its expansion, the airline faces the dual challenge of sustaining competitive pricing while ensuring the reliability and cost-efficiency of its engine maintenance. Industry analysts suggest that this partnership could establish a new benchmark for service quality in the sector, potentially prompting competitors to seek similar alliances or to invest in their own MRO capabilities to maintain market competitiveness.
The aviation industry’s growing emphasis on engine durability and stringent regulatory inspections—particularly for LEAP engines operating in harsh, dusty environments—may shape SunExpress’s maintenance strategies under the new agreements. Furthermore, ongoing delays in engine deliveries and the extended timeline for certifications across various engine platforms, expected to continue into 2026, could influence the airline’s operational planning and maintenance demands.
By aligning with Lufthansa Technik, SunExpress aims to effectively address these evolving challenges while supporting its fleet growth and upholding high operational standards.

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