> [!quote] From [Are You Established?](https://www.flyingmag.com/are-you-established/) by [[IFR Magazine]] > Combining all these disparate sources, we can assemble a workable and measurable definition of being established: To be stable or fixed, with a continuous display of navigational data showing no more than half-scale deflection for an ILS and VOR or five degrees off the required bearing for an NDB, of the centerline of an ATS route. #ir