A GPS approach (RNAV Rwy 33 Easton, MD) unexpectedly requires "RADAR REQUIRED" because it lacks an Initial Approach Fix (IAF). Without an IAF or a published entry route, pilots must be vectored by ATC ...
An IFR training scenario highlighted how strictly following published procedures without ATC vectors can lead to impasses, contrasting with real-world IFR flying where ATC provides necessary guidance.