> Having ff on an ipad and phone is really not having a “common point of failure” The “common point of failure” is GPS, which does have regular local/regional

> Having ff on an ipad and phone is really not having a “common point of failure” The “common point of failure” is GPS, which does have regular local/regional outages. Your instruments may be able to use VOR/DMEs, and hopefully you're able to use the VOR MON: * https://www.flyingmag.com/flying-the-mon/ https://www.flyingmag.com/flying-the-mon/ * https://www.faa.gov/air_traffic/flight_info/aeronav/acf/media/Presentations/23-01-VOR-MON-Program.pdf https://www.faa.gov/air_traffic/flight_info/aeronav/acf/medi... But if you're relying on a GPS approach, you may be SOL (many places don't have ILS, and only visual and GPS).