For practice, I just planned and simulated a route from Kemble (EGBP) to Turweston (EGBT).  I planned the route to the north of Banbury so as to be able to position for an overhead join to either runway (all circuits at Turweston being to the north).  However, before reaching Banbury I crossed the extended centreline of Rwy 09 (which, as it happens, with today's weather would have been the landing runway - but I was 15 nm out!) and SD flipped into virtual ILS mode.  Whilst the simulator continued to fly the planned route (exactly as I would have done!)  All the HSI information plus distance to go, time to go etc were now changed to reflect the 'ILS' 09.  I could find no way of reverting the display to Nav, nor any reference to this in the manual.

Surely crossing an extended centreline at your destination without intending to make an immediate approach isn't an uncommon phenomenon, so I can't believe that it's not possible to tell SD that a straight-in from that distance out is not one's intention?  I assume that I've missed something?

Gadget

(SkyDemon for Android v 3.5.0.19917 running on Samsung Galaxy Tab 3 8") 

Maybe it would be less confusing for the pilot if the switch to ILS mode could only happen AFTER the last waypoint in the route unless manually triggered by the pilot actively selecting a runway and a join?

That seems to be a good suggestion. SD follows the enetered route and only allows itself being kicked into ILS mode after the final waypoint. This would solve all potential problems the pilot might have with a premature switch while not taking away anything of the convenience.

-- Chris.