I asked this in the R&N mega-thread, but received no response, so here goes again.
There is at least one report that the EPR "gauges" failed in this case, what I'd like to know is, how is the EPR signalled to the cockpit and, in the event that the EPR measurement on each engine failed, how would this affect the FADEC/EEC? How many redundant EPR measuring "channels" are there on each engine?
I suppose what I'm really asking is, in the absence of EPR inputs into the whole engine control system, what would the FADEC do?