Originally Posted by
Breakthesilence
If it is for training purposes in the sim (to hide the ILS indications in case the DME is based on an ILS) you can make the cadet use the FIX Page for the distance so he/she can perform the NDB procedure without seeing the ILS.
If it is for training in real life you can consider a split flight deck with the PM having the ILS and reading the Distance and altitudes and the PF having NDB indications only. I would do that in optimum weather anyway...
If it is real life operations and no training, just fly the ILS
The ILS might not be available in real life, at least quite a few years ago. I seem to remember KDTW occasionally losing the ILS in snowstorms due to snowbanks. I think an NDB was the only thing left on certain runways.