Boeing commercial jet deliveries dropped last year by more than a third compared to 2023, as the aerospace giant wrestled with multiple major challenges. In data released Tuesday, Boeing (NYSE: BA) reported it delivered 348 airplanes to customers in 2024, down from 528 the year prior.

A nascent recovery from Boeing’s troubles stalled in the fall when a 52-day Machinists union strike stopped almost all Boeing jet production in its Puget Sound assembly plants.

Boeing delivered less than half the number of commercial aircraft to customers than its European rival in 2024, The American aerospace giant reported on Tuesday that it supplied 348 jetliners during the year.