DC10 engine anti-icing
Can anyone give me a conclusive answer to either of these two questions regarding CF6 engines and the DC10-30.
1. Can you clarify when engine antiice is required with respect to the 3 degree split between oat and dew point. I was told that some crews interpret this as applying even when the OAT IS 30 degrees celsius and dew point is say 27 degrees celsuis. I'm a bit suspicious of this.
2. In the descent with idle thrust and in visible moisture with the TAT above 6 degrees celsius, what are the engine antiice requirements.
Now I know what I would d o for the above, personally, but can I have a manufacturers definition as to the requirement, please.
Thanks for your help guys.