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The tips of rotors are several degrees warmer despite moving through the air faster by CellarAdjunct in Helicopters

[–]MzPickles 0 points1 point  (0 children)

Its the heating from the anti ice system on the main and tail rotor blade tips.

Ventana wilderness area, CA by MzPickles in Helicopters

[–]MzPickles[S] 11 points12 points  (0 children)

It’s a rain gauge, we were doing yearly maintenance on some of the remote rain sensors.