I'm a couple thousand light years past Sagittarius A, on my way to Beagle Point and I noticed that my FSD is at 99% health, though I haven't had a single impact or overheating incident since I'd started the trip. The only incident was a binary star where I immediately fired off a heat sink and my ship's heat never got close to dangerous levels, but that was weeks ago, and nothing happened to the modules. But today I checked my modules and my FSD is at 99%. What would cause module damage, if my ship never overheated or had any impacts? Just before I checked the modules, when my scarab was boarding my ship from the surface of a moon, I heard a "chassis integrity compromised" message as the scarab was lifting into ship (but that's the only warning message I'd gotten during the trip).