The Author was Alexander Barrie and our hero was a boy called Jonathan Kane.
I remember two books:
Fly for three lives
Let them all starve
I think there were more but I don’t recall the titles.I read them over and over again I’m sure I could have flown an Aztec single handed as a 10 year old had the need arisen.Fond memories of these books.
(also too much time on my hands)