I assume you mean satellite and not terrain mode. Terrain mode doesn't have images so there are no planes visible at any airports. As for satellite mode I looked briefly and noticed 2 planes.
Yes I meant satellite. Still strange as it's one of the busiest airports in the world and images appear to be taken during the day so... no way there were only 2 planes at any given point... For example Gatwick (LGW) does show quite a few planes just parked.