Fiction, try the early works of Gavin Lyall. Evocative novels of the world of ex-military pilots scratching a living after the war.
- The Wrong Side of the Sky,
--The Most Dangerous Game,
--Midnight Plus One,
--Shooting Script.
Also try
Shadow 81 by Lucien Nahum. Jeremy Clarkson rated it one of the best 5 novels he'd ever read. It's stuck in my mind for over 20 years.
Non-fiction:
The Ravens - Pilots of the Secret War in Laos, and Air America
both by Christopher Robbins.