Boeing reported that shortages of a particular kind of wiring connector had hindered manufacture of its 737 aircraft, while some of its airline clients had been forced to postpone flights owing to a lack of workers in the post-pandemic recovery. Boeing CEO David Calhoun stated that the rapidity with which the move from demand to supply difficulties occurred was astonishing. He noted that Boeing had a large, intricate supply chain with a lot of fragility, which caused issues when there were delays, and that it's been a genuine concern for both manufacturers and will probably be that way until the end of next year, in his opinion.
Their competitor, Airbus, stated that it recognized increasing short-term risks in its supply chain but was confident that its worldwide network of suppliers would be able to keep up with the supply. However, not everything is as bright as it seems. Airbus had in the end of May assembled 20 planes but without engines, because there was disruption in supply.

Movement of Boeing stocks in the last five years. (Source: Trading Economics)
Sources:
https://www.nasdaq.com/articles/boeing-expects-supply-chain-problems-to-last-through-most-of-2023