Special Air Mission 27000 (SAM 27000), another Boeing VC-137C, entered presidential service in 1972 under President Richard Nixon’s administration. It replaced SAM 26000, but both aircraft operated together for a period, with SAM 27000 becoming the primary presidential aircraft while SAM 26000 continued to be used for select missions.

Both aircraft were similar in appearance and design, but the newer addition came equipped with upgraded communication systems and more advanced avionics, making it a step forward…