DO WE NEED ENGINE ANTI-ICE?
(https://www.twitch.tv/katiepilot)
Is there Visible Moisture?
(In cloud, or fog <1600m vis, or precipitation, or water / ice on ground)
YES
Is the TAT ? 10°c?
NO
NO
Engine Anti-Ice
NOT REQUIRED
YES
Are we in the descent?
Engine Anti-Ice
REQUIRED
YES
NO
Is the SAT >-40°c
YES
(i.e. -40°c or warmer)
NO