767 ER Engine Anti Ice
My company just came out with a memo that they want us to operate both the engine and wing anti- ice in the "auto" position on the jets that have the 3 position selector switch (all but a handful of our ERs). They want us to do so even in icing conditions (normally we select "on"). They say Boeing recommends it, but I highly doubt that. I also don't by his (the guy that wrote the memo) explanation that operating the system like this prevents run-back icing on the wing. To the contrary, I believe preventing ice formation in the first place (by having the selector "on" in icing conditions) is the best practice. Perhaps I need to be better educated on the system or on the latest information about inflight icing. Any ideas?