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Meeting	ACGS Committee Meeting 111 - Reno, Nevada - March 2013
Agenda Location	5 SUBCOMMITTEE C – AVIONICS AND SYSTEM INTEGRATION 5.2 NextGen Navigation
Title	NextGen Navigation
Presenter	Bill Wanner
Affiliation	FAA Technical Center
Available Downloads*	presentation
	Downloads are available to members who are logged in and either Active* or attended this meeting.
Abstract	This presentation discusses the evolution of air navigation in the United States. The presentation begins with the introduction of air navigation by the US Postal Service using lighted beacons to fly various air routes for the delivery of air mail. However, it was recognized that navigation by lights had significant drawbacks. The next air navigation system was the Low Frequency Radio Range (LFR), also known as the Four Course Radio Range. The evolution in air navigation continued with the Non Directional Beacon (NDB) and the VHF Omnidirectional Radio Range (VOR). These systems are still in use today and many of the air routes currently flown use the Victor and Jet airways that are defined by the VOR network of stations. At this point a look at the concepts of NextGen is discussed. The advent of satellite navigation using GPS and the GPS augmentation systems (the Wide Area Augmentation System (WAAS) and the Ground Based Augmentation System (GBAS)) allow the advanced concepts of NextGen to become reality. The concept includes Performance Based Navigation (PBN). PBN defines requirements to conduct a particular operation. The first implementation of PBN is Area Navigation (RNAV) and Required Navigation Performance (RNP). RNAV is a method to get from Point A to Point B in the most efficient manner. RNP is RNAV with the added functions of monitoring and alerting. The first application of RNP uses Special Aircraft and Aircrew Authorization Required (SAAAR). SAAAR is necessary to ensure the aircraft has the right equipage and the aircrew is properly trained to fly these initial complex procedures. The presentation concludes with a summary of air navigation systems.