South Korea’s Code One 747 landed here at SFO just now

South Korea's presidential aircraft, callsign "Code One," touched down at San Francisco International Airport, marking the type of high-visibility head-of-state arrival that draws attention from both aviation enthusiasts and operational personnel at major international gateways. The aircraft is a Boeing 747-400, chartered from Korean Air and configured for VIP transport, that carries the "Code One" callsign specifically when the President of the Republic of Korea is aboard—analogous to how any US Air Force aircraft carrying the American president becomes "Air Force One" regardless of tail number. Unlike the United States, which maintains a dedicated, permanently assigned VC-25 fleet, South Korea leases a commercial 747-400 from Korean Air and modifies it for presidential use on an as-needed basis, a model shared by several nations that lack the budget or requirement for a standing head-of-state fleet.

For pilots and ATC professionals, arrivals of this nature carry real operational significance well beyond the novelty of seeing an increasingly rare 747 hand-flown into a major US airport. Head-of-state flights typically involve pre-coordinated arrival slots, dedicated gate or remote parking assignments, temporary flight restrictions (TFRs) around the airport during arrival and departure windows, and close coordination between the FAA, TSA, Secret Service, and the visiting nation's security detail. Crews operating in and out of SFO during such a window—whether flying commercial, cargo, or general aviation traffic—may see altered sequencing, holding, or ground movement restrictions as controllers manage the priority handling these flights receive. Business aviation operators transiting the Bay Area on the same day are particularly likely to notice schedule friction, since VIP movements often compress arrival and departure banks at an already slot-constrained, fog-prone airport.

The aircraft itself is also notable from a fleet-trends perspective. The 747-400 has been almost entirely retired from scheduled passenger service by major carriers, with only a handful of operators—Korean Air among them—still flying variants of the type, largely in freighter or specialty configurations. Government and head-of-state transport has become one of the last strongholds for the four-engine widebody, prized for its range, redundancy, and cargo capacity for accompanying staff and security equipment, even as most airlines have shifted to twin-engine widebodies for efficiency reasons. This mirrors the US experience with the VC-25, where replacement of the aging 747-based Air Force One has faced years of delay, underscoring how government VIP transport timelines often lag well behind commercial fleet renewal cycles.

Sightings like this one also reflect a broader pattern of increased scrutiny and public interest in diplomatic and VIP aviation movements, fueled by flight-tracking tools such as ADS-B Exchange and FlightAware that allow enthusiasts and professionals alike to follow callsigns like "Code One" in near-real time. For working pilots, the practical takeaway is less about the specific aircraft and more about situational awareness: diplomatic arrivals at major hubs can introduce short-notice airspace and ground movement changes, and monitoring NOTAMs and TFR advisories ahead of known or suspected head-of-state travel remains a basic but essential part of preflight planning when operating into or through affected airspace.