So what do would you do if the the ADF pointed in a different direction from your FMS?
I am sure they have an approved procedure for that case - it's a commercial op with an approved manual.
I had a funny exchange with an instructor a while ago. I asked him what he would do if the ADF said he was OK but a GPS was saying he is going to die. His reply was he would trust the ADF. D*ckhead.
This kind of stupidity, within some of the instructing profession, is why we still have these attitudes.
The correct answer, for most people I think, is you climb to the SSA, get radar vectors, and land somewhere with an ILS.