Not the engines but they do make the cowlings afaik. Also they sell the plane as a whole so they're responsible for it even if they didn't make every part in ho

Not the engines but they do make the cowlings afaik. Also they sell the plane as a whole so they're responsible for it even if they didn't make every part in house. But yeah it's really unlikely to be a Boeing issue and much more likely a maintenance or external issue.