Airliners are not just tasked with carrying passengers and freight, but they also carry the manufacturer’s branding. An aircraft type’s name becomes shorthand for its capabilities, its safety record, and the maintenance and training ecosystem built around it. This is why Boeing’s 1997 acquisition of McDonnell Douglas raised an obvious question, as Boeing never chose to make the McDonnell Douglas MD-11 a Boeing-numbered model. The short answer here is that the MD-11 was already a mature, certified, in-service widebody with a large operator base by the time the merger came into effect on August 1, 1997. Boeing inherited a product whose sales momentum had slowed, and it soon chose to phase production out after filling the remaining order backlog.