Originally Posted by
chewing4gum
It's not just about fire prevention when refuelling.
But also about the electrostatic charging of an aircraft and the danger to electronics…
Electronics are not affected by the charge accumulated on the airframe. Certification provides for direct discharge to exposed parts. There are ESD protections in place just for that.
Radio devices may be affected by radio noise created by continuous discharge during flight as static may build up due to friction with ice or water droplets at high speed, that's why high speed aircrafts have static dischargers.