AIM Updates Transponder Operating Tips

 - September 24, 2012, 2:32 PM

A recent update to the FAA’s aeronautical information manual (AIM) specifically wants to refocus how pilots use their transponders on the ground. For years, most pilots became used to ensuring transponders were turned off until takeoff or as part of the after-landing checks. The AIM now says, “Civil and military transponders should be turned ‘on’ to the normal altitude-reporting position prior to moving on the surface to ensure the aircraft is visible to ATC [ground] surveillance systems.”