Very unlikely such crash would be caused by the scenery. Under FS9, a crash without errors it's usual an Out of memory caused by an addon with actual executable code, like an airplane gauge that takes lots of memory. Were you flying with a default airplane or an addon ? Have you tried with a default airplane ?
Also, please not the distance from the airport when the crash it's happening because JFK loading range is 8.0 NM (it's a bit shorter than usual because of being close to KLGA, so JFK is not loaded if you are at LGA), if your crash happens farther than than, it's 100% it's not the scenery.
Apart from airplanes causing OOM, the most typical crashes are caused by missing/corrupted AI textures, or terrain data.