Recent analyses of the aviation industry reveal that new-generation narrowbody engines, such as the Pratt & Whitney GTF and CFM International Leap, are unlikely to reach the durability milestones of previous models within the next five years. Industry experts cite ongoing constraints related to LLP limits and thermal stresses as primary factors.
According to Darren Wormald, COO of Engine Lease Finance Corporation, while these engines may not match the long-term durability of earlier variants, their operational stability and fuel efficiency are valued advantages that sustain demand. Leasing demand for these models is reported to be significantly higher than for older engines, driven partly by limited shop visit capacity and persistent supply chain constraints.
Supply Chain and Maintenance Challenges
Wormald highlights that supply chain disruptions have hindered the ability of OEMs to improve shop visit throughput, resulting in ongoing in-service issues and increased backlogs. Short-term fixes are expected to provide only gradual improvements, leaving the industry vulnerable to systemic disruptions in the supply chain.
This situation underscores ongoing challenges in balancing technological advancements with logistical constraints, potentially impacting engine availability and operational planning in the near future. For more insights, the upcoming Engine Yearbook 2026 will feature a full interview with Wormald and additional industry reports.
Alex Derber, a UK-based aviation journalist, contributed to this report.
