Airline CEOs Criticize Engine Manufacturers Over Fleet Reliability

Several major airline CEOs are criticizing engine manufacturers for persistent reliability problems, grounded fleets and delayed deliveries that are severely constraining global capacity and profitability. During a recent industry panel reported by Aviation Week, executives warned that engine OEMs should cease delivering new products until the technology is fully reliable, rather than relying on in-service fixes.

WestJet CEO Alexis von Hoensbroech described the current state of affairs as a "fundamental reliability issue," noting that multiple carriers are facing similar challenges. Executives reported that double-digit percentages of their fleets have been grounded at various points due to engine inspections and parts shortages. These disruptions are particularly acute for the A320neo family engine overview and 737 MAX engine and fleet data, where early-life reliability and time-on-wing shortfalls have forced airlines to adjust schedules and seek expensive short-term wet leases.

The dispute centers on OEM accountability and the financial burden of unplanned maintenance. CEOs argued that manufacturers' reliability assumptions were overly optimistic, leading to higher-than-expected shop visit frequencies and MRO bottlenecks. While engine OEMs typically manage these issues through power-by-the-hour contracts and warranty agreements, airline leaders are calling for more conservative guidance on parts life and stricter financial penalties when reliability targets are missed. Industry analysts suggest this public rebuke reflects a broader shift in the airline-OEM relationship, with engine reliability issues becoming a secondary bottleneck as airframe production delays already limit growth.