Simple question: how would you find the nearest airport having a certain type of instrument approach? Let’s say your cruising along and you have a sudden failure of your Garmin 430’s, leaving you with nothing more than an old, dusty ADF and a handheld radio. Is there an easy way to find the nearest airport having an NDB approach (without just asking ATC)? Or, maybe you’re an instrument student and you want to practice an LDA approach, or maybe you’re planning your long cross country and you’re hunting for a VOR approach near a particular route. Same issue - how would I find airports having whatever I’m looking to fly? I guess I’m looking for some sort of app where I can filter the airports shown on a map by type of approach, etc...gotta be a better way than paging through terminal procedures, or looking at random airports in ForeFlight.