airport colors

Question 1

what does blue airport mean

Answer 1

• has an approach Instrument Approach Procedure (IAP) &/or RADAR minima published
  in either
• FAA Terminal Procedures Publication (TPP) or DoD FLIPs
  -DoD FLIP = Flight Information Publications & Flight Products
• at least in High Altitude DoD FLIPs
• also has Transportation Security Administration (TSA)

Question 2

green airport

Answer 2

• has an approach Instrument Approach Procedure (IAP) &/or RADAR minima published

in either
- FAA Terminal Procedures Publication (TPP) or DoD FLIPs
-DoD FLIP = Flight Information Publications & Flight Products

Question 3

brown airport

Answer 3

• no Instrument Approach Procedure (IAP) or RADAR minima