Useful stuff, PPT. I am very puzzled by the LRGyro in the ISIS throwing a wobbly 'at the same time'. I can only surmise either exceedance of attitude limits (if any), power suply issues or a software glitch. Sadly my old git's instinct points ME to number 3. Surely the odds of a cotemporal failure there are remote? PJ2? Is there any (unlikely?) cross-tell between ADIRUs and ISIS?
EDIT: I do query PBL's diagnosis of the ISIS fault, however "At a similar time, the DG in the stand-by flight instrument system complains." - what is a 'DG'?