Why Airlines' New Fuel-Efficient Engines Are Failing The Reliability Promises OEMs Made

While modern engines offer significant fuel efficiency savings compared with their predecessors, some of those savings are being offset by higher maintenance costs, increasing the cost of ownership compared with what airlines had expected. IATA recently released a new report that examines how engine durability issues, spare parts shortages, limited spare engine availability, and constrained aftermarket access are disrupting airline operations. One of the biggest issues is that so much engine manufacturing capacity was lost during COVID-19, and this is just difficult to recover.