C2j, that's the one - Pulau Sudong
http://en.wikipedia.org/wiki/Pulau_Sudong
I figured you might get it. You must have flown past it quite frequently.
Here's the original image with the RSAF Black Knights aerobatic team (Red and White Knights would be a better name):
and here's an image from Google Earth:
It still amazes me that there are five (six if you count Pulau Sudong) operational airfields on an island that is only 80% larger than the Isle of Wight. And just for insurance purposes, there is the emergency runway on the East Coast Parkway near Changi.
C2j, I was surprised that Pulau Sudong is not on the WAC. Does it show on the Jeppesen charts?
I42