Loran-C used to be available until it got shutdown in the 2010s because GPS was thought to be ubiquitous enough that other systems weren't needed: * https://en

Loran-C used to be available until it got shutdown in the 2010s because GPS was thought to be ubiquitous enough that other systems weren't needed: * https://en.wikipedia.org/wiki/Loran-C https://en.wikipedia.org/wiki/Loran-C Turns out having a more resilient backup is useful. China has built out an eLoran system (as well as a fibre-based precise-timing infrastructure): * https://www.gpsworld.com/china-completes-national-eloran-network/ https://www.gpsworld.com/china-completes-national-eloran-net... * https://www.mdpi.com/2076-3417/13/23/12703 https://www.mdpi.com/2076-3417/13/23/12703 * https://www.gpsworld.com/china-finishing-high-precision-ground-based-timing-system-a-worry-for-the-united-states/ https://www.gpsworld.com/china-finishing-high-precision-grou... I don't think Loran-c gives enough accuracy to land a plane all by itself, but it should get you to the airport, after which local beacons (VOR) will align you with the runway, and ILS will get you safely on the ground in IFR conditions.