the exhaust nozzles must take a hell of a beating - The engine is ingesting all the oxygen that is ladden with salt water vapor
While turbine and compressor erosion is indeed a problem (we can install a spare engine in minimal time), airframe corrosion leads to most down time. Our artisans must fashion replacement parts from raw aluminum, heat treat and install; not a quick thing. I am always on the look out for licensed folk that are skilled at this.
Ahahahaha! Artisans...
Ohman, Michael. The tinknockers I used to work with at PHI & Air Log would be chucking bucking bars at your head if you called them artisans to their face.