Originally Posted by
MightyGem
The PNF(Capt) entered a new (incorrect)waypoint in the FMS without checking it's Lat/Long or asking the PF to confirm his selection.
And that was part of the problem, the beacon that they wanted the aircraft to steer towards had the same frequency and identifier as another beacon 132nm away and in another valley. If they had 'recognised the ident of a beacon' it would have been the same anyway. The logic of the FMS made the aircraft turn towards the nearer (wrong) beacon. As you say, the new course wasn't checked and confirmed as it should have been but subsequently the FO asked 'where are we?' and 'where we heading?' and the Captain's reply was that he didn't know.
The aircraft on autopilot, following the FMS had put them in a place where they had lost situational awareness. The report says that over-reliance on automation was a factor.