- RNAV (GNSS) or also called RNAV (GPS): Requires 1nm accuracy for initial and intermediate approach segments, and 0.3nm lateral accuracy for the final approach segment; standard vertical accuracy. Currently only has straight segments.
- RNAV (RNP): May require increased lateral accuracy in any segment (down to 0.1nm for some approaches), and/or has specific vertical accuracy requirements (e.g., using Baro-VNAV). This type of approach may also have curved segments (RF legs). Authorization Required (AR) to fly the approach... practically means redundant equipment, additional crew training and approved operating procedures.