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.

The troubled aerospace giant Boeing says it delivered just 348 aircraft to its customers last year, its lowest output since the pandemic. Boeing ended the year with a backlog of 5,595 unfilled orders.

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.

Deliveries of new Boeing jets bounced back in December after a crippling labor strike that slowed production last fall, but the company's annual deliveries dropped in 2024 to the lowest level since the COVID-19 pandemic.