Anti ice ?

[benbakers 0]

I have a question that torments the mind.Is the anti ice is simulated on the 737 NGX? I do not speak of the visual, but the consequence?When we must activate the system AntiIce? Sorry for my english Mathieu Laws, France

[NGX 1]

Yes it's modelled flight dynamic wise but not visually

[benbakers 0]

Ok thanks, but when we must activat it ?

[NGX 1]

Below 0 Celsius

[aentwis 61]

Perhaps I am totally wrong on this, but I always thought anti-ice was needed in conditions of visible moisture below +10°C OAT (or is it TAT...?) Not that I am in any way a real world pilot of course... Andrew

[bpcw001 22]

Ok thanks, but when we must activat it ?

Below 10°C TAT when in visible moisture (clouds, mist, rain ...) or in any area/altitude where icing is anticipated (e. g. based on weather charts / WXR).There are finer details of when or when not to use ant-ice in the respective manuals, but that's what I use as a general rule.

[aentwis 61]

Cheers...Andrew

[ebo 0]

A question come in my mind. We can see TAT in NGX. Is there a possibility to see the SAT too?

[bpcw001 22]

A question come in my mind. We can see TAT in NGX. Is there a possibility to see the SAT too?

Sure. Go to the PROG pages of the FMC. I think SAT is displayed on page two.

[Spin737 102]

A question come in my mind. We can see TAT in NGX. Is there a possibility to see the SAT too?

Prog 4/4 Edit: or maybe 2/4 like Dave says. I forget. Definitely on the Prog pages.

[ebo 0]

Ah you right. I forgot to check the cdu :)thks!

[c402_cvs 0]

Below 0 Celsius

NopeFRED

[Jack_C 1]

Also, if you are on climbout or cruise, and the SAT is colder than -40C you can turn it off. But if you are on descent the -40C rule does not apply.

[benbakers 0]

Suppose it really necessary to activate this system and I don't make it, what will happen there?

[NGX 1]

Performance will be effected. You'll get more drag on the wings, less lift etc