What others are saying...
Didn't manage to try all the hawker food but you can get most local delights here. For a local hawker centre, service & ambience definitely nothing much to talk about.
I went to Old Airport Road many times before and I will always order my food from this stall called Pasta Risotto at unit number #01-09. This stall cooks spaghetti and risotto just like the name implies and it is delicious. There are many different types of spaghetti to choose from and I think that main highlight of the dishes is that the sauce of the spagheti is not to sticky or watery. The ingredients like seafood is also very fresh. Definitely one of the best spaghetti dishes I have tasted.
Fish head bee hoon and lao ban soya beancurd - http://phuachiuyen.wordpress.com/2012/11/29/old-airport-road-food-centre-19-old-airport-road/
Lots of good hawker eats. My favourite got to be the sliced fish bee hoon and lao ban soya beancurd. Try them!