Tools Used: Air Traffic Controllers

Aircraft guidance systems

• Area navigation RNAV systems
• Automatic direction finder ADF radio systems
• Differential global positioning system DGPS surveillance systems
• Distance measuring equipment DME
• Global positioning system GPS surveillance systems
• Local area augmentation systems LAAS
• Long range navigation systems LRNS
• Microwave landing systems MLS
• Standard terminal automation replacement systems STARS
• Transponder landing systems TLS
• Wide area augmentation systems WAAS