Why does this happen?

[asda_price]

Hi everbody. I've got an annoying problem. I created a flight from Heathrow to Brussels National an started to fly. As I got near to the destination, I turned on NAV HOLD to get me aligned with the runway I was cleared for (25R). I tuned into the ILS and my plane started turning. It stopped and I could see the runway. But the plae couldn't properly align itself; it just kept turning bent then bent again, it tried over and over again but it just couln't do it! I'm using the POSKY B744. Help please. Thx

[Ivan]

NAV hold isnt the same as ILS hold.

APR is ILS mode, not NAV

[OTTOL]

Your intercept angle for the Localizer may have been too extreme as well. When this happens, the a/c will "chase" the localizer.