Madchinaman,
The Airman Shop is no more located at Clemenceau Road. It has shifted quite sometime ago. Its now located at Phoenix Hotel(basement) or better known as Specialist Shopping Centre.
FD,
I hope you still can acquire those books there but
I doubt so. Its no more known as the
Airman Shop its known as a Religious Shop(Christians). But if you are lucky, you still can get books, videos and useless maps.
You can try Borders, the best would be to buy through the NET from Sporty's !
Just to let you know Singapore does not cater for Aviation enthusiast. 
Good Luck Mate
Best Regards,
Herman