Which PDF has the infomation on using the TAI ON/OFF options.

 

It is not very icy at the moment in the UK, but it is a bit wet I guess. It is above 10c.

 

However it would be nice to go over this descent forecast page more.

 

Thanks

 

Jools

http://forum.avsim.net/topic/375109-icing-tat-and-sat/#entry2378913

ok thanks

Do NOT use TAI when the temperature is over 10 degrees celcius.

From another posty today:

Icing and ice are not quite the same from the piloting point of view. Flying through ice is like driving through hail. Its noisy and there is a risk of clogging something, but it doesn't stick or build up. This is what you might experience flying through clouds at higher altitudes.

Icing conditions involve liquid water that turns solid on contact, and the danger here is from the fact it accumulates. The rule of thumb of -10 to +10 below 10k is useful because above 10,000 feet, and below -10C there is very little liquid water that can freeze on contact with the airframe, and above +10C it is very unlikely to freeze.

Is there a good example of how this page is filled in, with the resoning behind it? Maybe some pictures?

 

I had a look through the PDFs, there is a lot of stuff on the subject but I can't how to fill the FMC?

 

 

Funnily enough it has been a very hot day where Iive, so I won't be using AI.

Look at the weather forecasts and winds aloft predictions. Those will tell you what the clouds might be doing, as well as PIREPs and your own experience. You might be doing a turn, and remember that on the KSEA-KSAN leg, TAI was off above 12,000. On the way back, plan to have it on.

 

Wing anti-ice is not used as often as cowl heat. Most pilots I fly with prefer to use it as a "de-ice" to clean the wings once in a while. It's rare to need it on for more than a minute per flight, if at all. Maybe just a blast on descent to clean the wing. I wouldn't include WAI in any sort of descent planning.

ou might be doing a turn, and remember that on the KSEA-KSAN leg, TAI was off above 12,000. On the way back, plan to have it on.

 

Is this a tutorial, I'm not sure I have it but I could find it. I would like to know what it looks like when it is entered in the Scratch pad. I saw there were options for the altitude somthing like -----/------ from memory. And there were places to enter ther expected wind, as well as tranistion alt, in the forecast page.

There's a line for TAI ON and OFF. On would be the ALT where you plan on turning TAI on and OFF. The FMC can then plan it's descent with the engines putting out a little more thrust from the ON to the OFF altitudes.

 

I've used it RW maybe 5 times. It's there. It works. But it's not critical.

There's a line for TAI ON and OFF. On would be the ALT where you plan on turning TAI on and OFF. The FMC can then plan it's descent with the engines putting out a little more thrust from the ON to the OFF altitudes.

 

I've used it RW maybe 5 times. It's there. It works. But it's not critical.

 

Well that's good to know, at least I have learned somthing this week.

 

In all honesty I don't think I can remember a proper winters day in the UK this year as it has been so warm, in the south. We had a bit of snow up north but not much, and I don't think I have loaded up winter settings to see what flight is like. I would imagine it would be a lot more difficult than flying in summer.

...and I don't think I have loaded up winter settings to see what flight is like. I would imagine it would be a lot more difficult than flying in summer....

To be honest, once you are above the clouds, there is very little difference no matter what time of year it is... London to LA on a hot August day and you still fly over the north pole :)

To be honest, once you are above the clouds, there is very little difference no matter what time of year it is... London to LA on a hot August day and you still fly over the north pole :)

 

Those long cross the pond flights are just too long for me. Mind you it can get quite cold in Scotland in the summer and I fly there alot.

It really is quite simple if you wish. See water outside? (water as in rain, clouds, fog, snow etc.) Check the TAT on your EIS. If its under 10, engine AIs on, if its over, off. That is pretty much it. Of course you will start getting hang of it later with more stuff like "how should I ammend descend so I still arrive where I should as high as I should?" or "OK, so I am slowing down, TAT is gonna go down, time for antiice".

It really is quite simple if you wish. See water outside? (water as in rain, clouds, fog, snow etc.) Check the TAT on your EIS. If its under 10, engine AIs on, if its over, off. That is pretty much it. Of course you will start getting hang of it later with more stuff like "how should I ammend descend so I still arrive where I should as high as I should?" or "OK, so I am slowing down, TAT is gonna go down, time for antiice".

 

OK cool.

Realism aside, remember that PMDG did not model icing effects (like flight dynamic changes or visible ice layers) because of the way FSX does them. So technically, you never need to use Anti-Ice, but it's still nice to use the procedures anyway.