Most people think private aviation began with the G650, the Global, or the Falcon 7X. But the real story starts much earlier in 1963 with a small, narrow, uncompromising jet that changed everything: the Learjet 23. Before the Learjet, there was no “business aviation industry.” No jet cards.  No charter marketplaces.  No operators that built their reputation on service. Just modified propeller aircraft and a few military conversions used by governments or corporations. Then Bi