It's specific to neither A380 nor FADEC. If the control connection to the engine is damaged or severed, then it cannot be shut down. For an older example, the Pan Am 747 at Tenerife in 1977 had its engines running even as it was consumed by fire. This was because the impact from the KLM 747 had ripped out all the engine control cables, which in the 747 run through the ceiling of the lower cabin.
Last edited by DozyWannabe; 17th Mar 2013 at 16:08.