Airline CEOs cite engine shortages and reliability issues

Airline executives reported that newer engines on Boeing and Airbus aircraft have not met reliability targets, leading to more frequent unscheduled maintenance. The engines were promoted for fuel savings of around 15 percent compared with earlier models.

Maintenance demands have increased operating costs and reduced the expected fuel savings, executives said at the International Air Transport Association annual assembly. Aircraft grounded for repairs also reduce available capacity during periods of strong travel demand.

Engine performance and costs Newer engines operate at higher temperatures to improve fuel efficiency, but that design has contributed to faster wear, according to airline leaders. Carriers have responded by increasing spare engine inventories and sending units to overhaul shops earlier than planned.

Engine overhaul and maintenance has become a more than $58 billion business. A CFM56 engine used on older Boeing 737s was valued at $9.2 million at the start of the year, up 17 percent since 2019, according to IBA Group.

Manufacturer responses GE Aerospace said it has invested in improvements to increase time-on-wing and output. The company stated it will continue those investments to deliver long-term value for customers. United Airlines CEO Scott Kirby said the industry faces a shortage of engines for at least the next five years, citing shortfalls in parts such as forgings and castings.

Rolls-Royce said it has invested £1 billion in its Trent engine fleet to extend time on wing. Pratt & Whitney's parent company did not immediately comment on a manufacturing defect affecting some of its engines.