Aurora is on version 2.5.0 C#, available at the Aurora Forums.
Contact Erik on the forum for a wiki account.
Ship Maintenance
Ship Maintenance
Once per 5-day increment, a check is made for each ship to see if a component malfunctions. Malfunctioning components require maintenance supplies to avoid breakdown. If the ship runs out of supplies, the component is damaged and must be repaired. To avoid that, add Engineering Sections to the ship class during ship design. You'll see how the Annual Failure Rate (AFR, the estimated number of malfunctions per year) drops with each additional section.
Overhaul
Ships age over time and overhauling reverses this at a rate of 1 month in overhaul reverses 3 months of age.
Overhauling requires minerals based on the ship size, components, and the maintenance clock.
Options
Maintenance and Overhauls may be turned off completely via an option in the Game Info window on the right at the bottom of the list of options named "No Overhauls Needed".