Satellite-based approaches are the modern standard — no ground navaids to buy or maintain, and with LPV you can reach minimums approaching a Cat I ILS. For most airports, this is the lowest-cost path to real all-weather access.
RNAV (GPS) procedures use satellite navigation — and increasingly augmentation (WAAS) — instead of ground-based stations. A single approach can publish several lines of minima so a wide range of aircraft and avionics can use it, from a basic lateral-only approach to a fully vertically-guided one.
This family is the FAA's (and the world's) strategic direction: as VORs and some ILS facilities are rationalized, PBN is where new capability is being built. Designing here future-proofs your airport and avoids the capital and upkeep of ground equipment.
RNAV (GPS) with lateral guidance (LNAV/LP): ~$30K–$45K. With vertical guidance (LPV/A-RNP): ~$50K–$65K. RVFP: ~$40K. Flight inspection is coordinated separately (~$15K–$20K). Final pricing depends on terrain, obstacles, and the minima pursued.
Tell us the runway and the minimums you're after — we'll recommend the lines of minima and a per-procedure quote.
Scope an approach Dave@airfieldairspacesafety.com