How reliable are night vision goggles and fly-by-wire systems?
The reliability of these of these systems are pretty good overall. While it is possible for them to fail completely, there are usually backup systems inplace. And example would be the NVGs, where a backup battery is in place so if one fails, a flip of a switch and the next one is working. There are also procedures in place for what do in the event of NVG failure. Fly by wire systems are the same type. Most of them are “quad redundant/dual operative”. This means there are 4 parts to the fly by wire system, and only two are needed for the plane to fly. This allows for two complete failures and the aircraft will still safely be able to recover safely.
