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Airlines find the grass isn't always greener with new engines

CNBC · Jun 8, 2026, 5:32 PM · Also reported by 1 other source

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  • It's a paradox: Engine makers dazzled carriers with more fuel-efficient options for new planes from Boeing and Airbus.
  • Newer models of aircraft engines burn hotter, allowing them to use less fuel.

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RIO DE JANEIRO — Airplane engine makers have fallen short of what they promised airlines, major carriers' CEOs say, a problem vexing an industry that has struggled for years with aircraft shortages and more recently, a doubling of fuel prices.

It's a paradox: Engine makers dazzled carriers with more fuel-efficient options for new planes from Boeing and Airbus. But production shortfalls and disappointing reliability with those engines are becoming costly problems, CEOs said in interviews at the industry's largest annual gathering here.

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