AirDat LLC is a privately held company formed in 2003 to develop the TAMDAR sensor, implement the supporting infrastructure, and create superior weather information solutions with the unique data set. AirDat also provides communication, tracking and specialized weather services to its airline partners in exchange for their carrying the TAMDAR sensors.TAMDAR has been installed on a wide range of airframe types, however twin- or multi-engined aircraft offer the broadest choice of mounting locations. The TAMDAR sensor is a lightweight ( 1.5 lb. ), low drag ( 0.4 lb. @ 200 knots ), low power device designed for easy installation and retrofit to any aircraft. It is a stand-alone system that does not require interaction with any critical aircraft systems ; this simplifies certification and crew training requirements.