Tactical Airdrome Directory- South Vietnam (TAD)
Pilots and navigators got information about large airfields from
the IFR enroute supplement and instrument approach books.
Many airfields in Vietnam were temporary or had no
instrument approaches so they were not included in these
publications. The USAF compiled information about these
small airfields into a separate book, affectionately called the
Contemporary Historical Examination of Current
Operations (CHECO) Report:
Tactical Airlift in SEA
A comprehensive review of combat airlift in Vietnam by the USAF.