Why are commercial flights safer than private?

In the United States, general aviation has run for years at roughly 0.9 fatal accidents per 100,000 flight hours, a rate the NTSB tracks annually. Commercial airline safety is counted the other way round, per departure: IATA recorded one accident per 1.26 million flights worldwide in 2023. The two measures are not directly comparable, since hours and sectors are different units, but the order of magnitude between them is unmistakable and it has widened steadily for four decades.

Two qualified pilots, each able to fly the aircraft alone, cross-checking one another through defined callouts. Recurrent simulator training twice a year and periodic line checks. A dispatcher sharing legal responsibility for the flight plan, the fuel and the alternates. Maintenance under a continuous airworthiness programme with every component tracked by hours and cycles. Mandated equipment: terrain awareness, traffic collision avoidance, predictive windshear. Stabilised-approach criteria that oblige a go-around rather than leaving it to judgement. And above all a safety management system with confidential reporting, which converts near misses into procedural changes before they become accidents.

Private covers a very wide span. A corporate flight department with two professional pilots, a safety management system and a business jet built to transport-category standards operates close to airline levels. Risk concentrates at the other end of the scale: single-pilot piston aircraft, schedule pressure to complete a trip, visual flight continued into cloud, and loss of control near the airfield. The aircraft is rarely the weak link; the organisation around it is what differs.