Hi There
Kogan Publishers provide a wide range of books for psychometric and aptitude test although these are not specifically designed for 'airlines', though I have used them and find them extremely helpful.
The topics they cover include mathematical and verbal reasoning, aptitude tests, psychometric tests etc...
Have a look at the link below:
http://www.kogan-page.co.uk/careersandtesting.aspx
In particular I recommend the 'How to pass Technical Tests'.
Cheers,
Danny.
