Dear Mr. Sudarshan,

I refer to previous correspondence concerning the announcement on 15 March of the release of your textbook on CNS/ATM System, titled Seamless Sky. After having read the book I wish to compliment you on its content. I feel that it is a very well structured compendium of existing material, which is scattered over different ICAO documentation and publications. As such, the book will undoubtedly serve not only as a useful introduction to the subject of CNS/ATM System for "newcomers" who have not gained the full picture from own experience, but also as a "handbook" for quick reference to those who are desperately searching for the precise ICAO references on specific subjects. Therefore, your book has now been given a place in the library of the CAA Denmark.

Once again: Congratulations on your book and good luck with the sales statistics!

Warm Regards,
Karsten Theil
Director, CAA Denmark

April 20, 2004.