My last calibration (also my first since this is brand new)was yesterday in a "park like" setting followed by a problem free flight. Today I flew in a large open space without issue before flying at the lake where the problem occurred. Again, I thankfully was able to bring her back safely, I did do another calibration after the error occurred and the following 2 flights were fine. FWIW, all 3 of these locations are within a 5 mile radius.