I agree with Landshark on this one- I figure that starships are such a known quantity in the setting, that they've likely got a reasonable number of "plug and play" type parts. Bad alluvial dampener? Grab one out of storage and swap it out. Bad gravitic sensor? Get that thing into a repair shop ASAP, that's outside of an everyman's scope.<br/><br/>Tl;dr- Spacers probably have a rough idea of how to fix their ships when a unit goes bad (they make so many modifications on their ships) but unless they have engineering backgrounds, anything beyond little fixes probably needs an actual engineer.