In article , Peter R.
writes:

I'd like to know how you get in icing when the temperature is +5. I have
never seen ice until the the gauge reads 0 or below.

I have picked up ice when the digital thermometer on an '02 C172 read +3c.


I picked up ice when my digital theromometer indicated +2 deg F. I brought it
home to calibrate it and found that it read 2 deg high at 25, 45, and 65 deg.
Pretty consistent in its error. Spec on the thermometer was plus/minus 0.5
deg. Know your own thermometer but you won't pick up ice much above 32 deg F.

Chuck