How to find suitable emergency landing airport?

[Ceemosp]

Inflight it's an easy task.

The fs9 built-in GPS has the button "nearest airport" - where all airfields are listed with their respective runway length and the type of
runway (grass/tarmac) which is depicted by different icons.

That would be the easiest way to find it when an emergency happens enroute.

Nevertheless it does NOT substitute a good preflight planning on your side. When selecting your route look at the alternates along your
planned route. This is especially important when doing long haul flight over non-populated territory. You will have to look at all options
beforehand to a) carry the appropriate approach plates (it's a nasty situation if you have to divert to another airfield and land IFR w/o charts
as you forgot to bring them along b) prepare certain keypoints of your flight where for example you will have to go on towards your
destination as fuel will not allow for returning (more fuel needed to return than to get to destination).

For that purpose you could use FS-Navigator or similar programs that will allow you to access the fs9 scenery/navaid database.

Greetz Carsten