> “ Todays airframes have a lifespan measured in flight hours” Isn’t the lifespan related to the number of cabin pressurizations (not flight hours). Which is

> “ Todays airframes have a lifespan measured in flight hours” Isn’t the lifespan related to the number of cabin pressurizations (not flight hours). Which is why long haul planes like 787 have longer lifespans than a 737, because 737 are doing way more quick turn trips (more pressurizations) than a long haul international flight plane.