Quad-Jets to Twin-Jets: The Evolution of Global Flight Safety
Historically, aircraft with three (trijets) and four (quadjets) engines held a significant advantage over twin-engine jets for long-haul, transoceanic flights. This superiority was primarily rooted in mechanical redundancy and a stringent regulatory restriction: the “60-minute rule.” Before the mid-1980s, jet engines were less reliable, and aviation regulators, notably the FAA, stipulated that a twin-jet’s flight […]
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