A civilian factory where military aircraft parts are refurbished can be subject to attack?

Yes, a civilian factory where military aircraft parts are refurbished can be subject to attack. Such factories are considered to be legitimate military targets under the laws of war, as they are directly contributing to the war effort by providing essential support to military operations. As a result, they may be targeted by enemy forces in order to disrupt or destroy the production of military aircraft parts, thereby weakening the military capabilities of the opposing side.