8 mm Basic Air Data Probe Tested in Wind Tunnel Posted on March 24, 2017January 22, 2018 by Basic Air Data Hello everyone! Good news. An 8 mm BAD probe was tested in a wind tunnel! We’ve been told that the Basic Air Data, DIY oriented 8 mm probe performed well within a wind tunnel You can read the full article about the wind tunnel here. PDF report “Air Data Instruments – Calibration and Discussion” available for download. Regards, BasicAirData Team Posted in News.