Thank goodness, everything aforesaid suggests that just like Human beings (who fly them) aircraft are mostly individual. A situation that I'm sure keeps our professional yoke jockeys on their toes, and our media in "tales of how dangerous flying is"! The C130 was to all intents and purposes a mass production jobby, but I bet most Airframe fitters could tell a story or two about replacing a NACA (pronounced Knacker) duct intake on the RAF C130K.
Smudge