On April 23rd, 1977, US-based legacy carrier Delta Air Lines operated what many expected would be the last Boeing 747 flight ever flown by the company. The carrier, after a brief stint of operating early-generation Boeing 747-100 aircraft, had decided that the model was simply going to be too large to serve the company’s needs. Delta was busy building a business model connecting secondary hubs like Atlanta (ATL) to destinations across the world, and the immense capacity of the Boeing 747-100 did not really fit with this operational model.