Many of us have been experiencing this issue that ADS-B IN target a/c's altitudes have been inaccurate in thousands of feet. Below was posted by Walter on October 7 in another thread. I believe iFly needs to get the word out ASAP elsewhere as some users may not know of the problem. Thanks Walter for finding the issue and fixing it!
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I believe this issue has been solved. The ping is sending an "Ownship" record indicating a 0' altitude. (I didn't even thing the Ping was sending ownship as it doesn't have a GPS...but it is). This message is screwing with the calculations normalizing pressure altitude. It has been corrected in v11. In the meantime, you can get past this issue by touch Menu -> Setup -> Units of Measure, and uncheck "Pressure Altitude Support"
Walter Boyd
President, Adventure Pilot |