National Airspace System: Problems Plaguing the Wide Area Augmentation System and FAA's Actions to Address Them

Pursuant to a congressional request, GAO discussed the Federal Aviation Administration's (FAA) Wide Area Augmentation System (WAAS), focusing on: (1) difficulties in developing WAAS; (2) actions FAA is taking to get the system on track; and (3) next steps for FAA to take to help mitigate future delays in implementing WAAS.