C172 True Airspeed Calibration

Good evening forum,

Flying the Asobo 172 (Steam) and am wondering if you are supposed to be able to calibrate it for negative temperature?

Currently it’s -11C but it will not let me go below 0C.

Oddly enough, if I use the Knobster within Air Manager on the C172 panel, I can get it to go into the negatives.

Not sure if it is supposed to, or is 0c as low as it’s supposed to go?

I think that you are using the scale incorrectly.


Thanks for the reply,

Maybe I am not understanding it correctly, but it certainly appears to have a calibration knob.

And when I adjust it, it appears to be in degrees Celsius?


Checking out the video now, was replying to your original reply before being removed.

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I had to remove. It’s too early in the morning and I haven’t finished my first cup of :coffee: :wink:

No worries!

That video explained it perfectly! Thanks for sharing.

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