More than 400 aircraft operators rate the quality of product support provided by avionics manufacturers, keeping Garmin at the top for two decades OLATHE, Kan., Jan. 24, 2024 /PRNewswire/ -- Garmin (NYSE: GRMN) today announced it is ranked No. 1 for the 20th consecutive year in Professional Pilot's 2024 Avionics Manufacturers Product Support Survey. Garmin received top rankings in every category of the survey, including product reliability, speed in AOG service, cost of parts, manuals or CDs, technical repr ...