Airbus SE said production concerns have shifted from a shortage of jet engines to smaller suppliers struggling to cope with spiraling energy costs, with the squeeze expected to become most acute next spring.

Korean Air Lines Co. will inspect the remaining 24 Airbus SE A330 aircraft in its fleet after one overshot a runway in the Philippines last month, the carrier’s president said Nov. 2.

Airbus SE is poised to carry out its first cargo flights for an external client using a fleet of giant Beluga jets originally built to ferry wings between the planemaker’s European factories.

The air cargo business, booming as never before during the global pandemic, is massively dominated by Boeing jets that make up most of the worldwide air freighter fleet. Yet there is a threat to that dominance.