G'day again Q
Yes, I got the funny intent - just didn't put the appropriate smileys in the reply <img src="smile.gif" border="0"> <img src="smile.gif" border="0">
You are probably aware of the other peculiarities of the FCUs in that they don't act quite like the usual triplex redundant systems. The 'normal' condition has TWO FCUs operating (one controlling and the other taking care of display output). If there is then a failure, the remaining one of the two takes over the whole shooting match and if that subsequently fails, No 3 steps in. Not quite what one would expect ! Why??? <img src="confused.gif" border="0"> ...give in. Probably seemed like a good idea at the time.