In the July 2019 issue of 'Aviation Safety' on page 22 there is an article regarding an FAA 'Information for Operators' (InFO 19006, May 6, 2019) publication where the FAA has noted that there have been issues with the SPOT interfering with other GPS instruments in aircraft and airplanes. The publication indicates that SPOT is working on the issue, "...provide detailed information to its existing and future customers..."
Boise, ID