numerical coincidence
99,9% probability of a meaningless relationship but who knows:
ISIS is linked to Adirus 1 and 3
IR2 (Adiru2 ?) was reported faulty by IR1 (ADIRU1) and IR3 (ADIRU3) (Is it true ?)
EFCS1 reported problems EFCS2 was having with pitot( - s ?) (Is it true ? Is EFCS2 linked to ADIRU2 ?)
ISIS has problems with gyroscope (comparison with ADIRUS 1 and 3?)
It is probably nonsense but I will post anyway.