Local Area Augmentation System (LAAS) Joint Precision Approach and Landing System (JPALS) Distance measuring equipment (DME) Instrument flight rules (IFR) Instrument landing system (ILS) Long-range radio navigation (LORAN) Microwave landing system (MLS) Non-directional beacon (NDB) Tactical air navigation system (TACAN) Transponder landing system (TLS) VHF omnidirectional range (VOR) Localizer performance with vertical guidance (LPV) References U.S. Department Of Transportation & Federal Aviation Administration, Specification for the Wide Area Augmentation System (WAAS) External links FAA WJHTC's Real-Time Interactive WAAS Performance Display FAA's WAAS program Garmin's What is WAAS? US Government's 2005 Federal Radionavigation Plan (FRP) WAAS coverage in Canada Global Positioning System 2003 in aviation Navigational aids Satellite-based augmentation systems