Avionics
One of Every Seven ADS-B Out Installs Problematic
While some of these are due to improper hardware installations, many are caused by incorrect configuration by avionics technicians.

Nearly 14 percent, or 6,255, of the 45,257 U.S.-based aircraft currently equipped with ADS-B Out avionics are not properly transmitting a signal, according to data from Duncan Aviation. While in some cases this is the result of improper hardware installations, in many cases it is caused by incorrect configuration by avionics technicians.