8 mm Basic Air Data Probe Tested in Wind Tunnel Posted on March 24, 2017March 25, 2017 by Basic Air Data Hello everyone! Good news. A 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 Share this: Posted in News.