Originally Posted by ACARS
.1/FLR/FR090601 0210 279334 06
EFCS1 X2,EFCS2X,,,,,,
FCPC2 (2CE2) /WRG:ADIRU1 BUS ADR1-2 TO FCPC2,HARD
About Svarin's concerns in relation to this "wiring fault".
It seems to be simply due to PNF selection of ADR3 in place of its own ADR1 displayed. Hence, he switched to ADR3 (wrong) shortly before ADR1 returned "good" again. A while later, it seems that ADR+IR 3 was switched for ADR+IR 2 on PF display.