The Clue "Wings of Fire" author Kalam's initials
The Answer APJ
The author of "Wings of Fire" is A.P.J. Abdul Kalam. His initials are A.P.J., which stands for Avul Pakir Jainulabdeen. The book is an autobiography that tells the inspiring story of his life and achievements. This makes "APJ" the correct answer to the crossword clue.