Precision landing capabilities anywhere

Hear Dan Brophy, a general aviation pilot, discuss how WAAS helps take workload off of the pilot and enhances safety.

Development of precision landing with WAAS

Collins Aerospace developed the WAAS system starting in the mid-1990s. From system commissioning in 2003, the Collins team continued to work with the FAA to implement key enhancements to WAAS as well as training FAA Engineering on WAAS maintenance activities. Starting in 2008, Collins trained the FAA Engineering team on WAAS maintenance activities.  Since 2014, Collins and the FAA Engineering team have collaborated together to perform many WAAS program modifications and technology upgrades.

WAAS for the Future

Collins and the FAA have introduced many significant changes to WAAS over the 17 years of operational service with no major impact to the user community.  System performance has improved over the years in parallel with adding to WAAS LPV and LPV-200 approach procedures catalogue opening up most of the airports in the U.S. for a WAAS-based landing. 

With the next planned WAAS upgrade (called WAAS Phase 4B), the FAA is moving WAAS into a more modern and therefore sustainable processing and network architecture while also adding dual frequency service for those users who equip for the dual frequency capability.  Single frequency service will continue to be available for users so all users don’t have to upgrade to dual frequency service in order to continue using WAAS. 

With the addition of dual frequency service anticipated by 2028, WAAS users with dual frequency WAAS-equipped receivers will find that WAAS service will support better positioning determination even during solar storm periods.

  • Continuity
  • Accuracy

In addition to aviation applications, WAAS is also used in a variety of other areas such as agriculture, automotive, construction, first responders, marine, and many more.

Continuity Accuracy