“In 2013, the global 737 fleet had completed more than 184 million flights over 264 million block hours since its entry into service.” https://en.m.wikipedia.o

“In 2013, the global 737 fleet had completed more than 184 million flights over 264 million block hours since its entry into service.” https://en.m.wikipedia.org/wiki/Boeing_737 https://en.m.wikipedia.org/wiki/Boeing_737 “The global A320 fleet had completed more than 164 million flights over 303 million block hours since its entry into service.” https://en.m.wikipedia.org/wiki/Airbus_A320_family https://en.m.wikipedia.org/wiki/Airbus_A320_family