Zachariah

“Mechanics will tell you airplanes never forget. If you overheat a turbine, it is forever weakened. Let sand pit your propeller blades and you've instantly shortened their service life. Electrical circuits don't tolerate dust and dirt. Neglect or abuse an airplane and she'll always hold a grudge. As the maintenance guys put it, metal has memory.”
― Tom Young, The Speed of Heat: An Airlift Wing at War in Iraq and Afghanistan