7 hours ago, Aglos77 said:

It has also been insisted that if they do not want to address the issue of weather, they should at least open the API to third parties, but Asobo does not seem willing to do so either.

There is no way that Asobo can (or ever will) “open up the API” for weather. The entire Live Weather system in MSFS is coded to work at a very deep level specifically and only with the gridded weather data contained in the NEMS30  weather model of MeteoBlue.

If the API was “opened up”, for the existing Live Weather system, any third party would have to provide exactly the same data, and in the exactly the same format, as MeteoBlue already provides, which would be pointless.

The only way that weather could be provided by 3rd parties, would be to scrap the current Live Weather system entirely and create an API that could use data from alternate weather models and using alternate parameters within those models. I don’t think that will ever happen.

It is already possible to use METAR data alone to set the weather globally, which is what Active Sky and other add-ons already do. That is probably the best that can be hoped for as far as 3rd party weather injection goes.

I finally got solid icing around Chicago in A2A Aerostar. Now I wonder if icing bug has to do something with longitude?

Imagine being in a DA40 today at CYHZ waiting an hour and a half for storms to pass only for it to flare back up and diverting to CYQI because of the fear of icing (and 50kts headwinds) and coming on here and seeing this thread 🤦 yep that really happened 

43 minutes ago, TheFalXon said:

Imagine being in a DA40 today at CYHZ waiting an hour and a half for storms to pass only for it to flare back up and diverting to CYQI because of the fear of icing 

Airmet zulu should cure fear of icing. Other than that I can't see how is it relevant to discussion. 

6 hours ago, sd_flyer said:

I finally got solid icing around Chicago in A2A Aerostar. Now I wonder if icing bug has to do something with longitude?

Did the aircraft weight increase and the wing shape/texture alter to eventually cause the plane to lose lift until it crashed...?   Or was it it just visual textures and no real effects ?

 

4 hours ago, aerostar said:

Did the aircraft weight increase and the wing shape/texture alter to eventually cause the plane to lose lift until it crashed...?   Or was it it just visual textures and no real effects ?

 

Aoa increased and air speed dropped, so yes there was effect. I didn't crash though I dropped on lower altitude shed some ice and landed.

... a few years back I tested it out in the A2A Comanche and I got locked into icing down to the ground and not enough lift to climb out...  yes had to keep pitching the nose up until it couldn't sustain lift and I sat with it into the ground....

Don't know what planes are affected by ice in the sim but I suspect the developers have to do some things to make it realistic...

The Aerostar will probably definitely have the same effects as its also made by A2A...

 

Edited December 30, 2025Dec 30 by aerostar

10 hours ago, sd_flyer said:

relevant

Im sorry I forgot to add that I didnt see no airframe icing nor on the windscreen but I did have my heat on since it was 0c OAT. I left the important part out in the future I will make sure to include all the finer details. OH I FORGOT I tried to get deiced but GSX threw an error probably was like look at this crazy loon trying to deice a DA40 or Humberto got a notification and he denied such nonsense. Either way I took off later that night from CYHZ and ended up diverting to CYQI which was in worse shape and miraculously didnt ice up there either. Hope that relevances things up a bit up to the standard 29.92 🫡

In MSFS 2020 with the Comanche the icing does affect lift in my experience. Yesterday i flew from Billy Bishop to Teterboro in MSFS2024 in the TC Bonanza. I did get visible structural icing but i didn't appear to lose any noticeable amount of lift. I wasn't going to hang around too long in those conditions to find out though.. I climbed above the cloud layer and the icing eventually went away. 

I had icing on the HJET going into CYEG today.  Didn't catch the temp.

dd

15 hours ago, Sky_Pilot071 said:

I had icing on the HJET going into CYEG today.  Didn't catch the temp.

dd

Problem is finding out if that icing is just visual or does cause effects in terms of flight dynamics, by degrading the efficiency of the lift generating surfaces(?)

I have to search for the parameters in the FM that tune icing effects, but I lost the link to their up-2-date description 😕

EDIT: Frost And Ice

Edited January 1Jan 1 by jcomm

I've heard and it has shown me in previous testing that the best outside temperature to get airframe icing in the sim is approx between -2 and -5 C...   you must have a lot of moisture,  I have seen the 'rain'  running across the side windows but it was also freezing on the airframe at the same time and building ice....  

The reported icing conditions by Navigraph charts and others dont seem to be entirely accurate as when you go there the conditions have changed a lot of the time.

Anchorage area and down that West coast is, I find , usually best for icing...

Of course you can set icing conditions most places in the sim with the weather creator.

It would be handy for some feedback from pilots to find which aircraft actually do ice up with the real dynamic effects.....

 

PS-  If you start to get an accumulation of ice then be careful where you fly, try and stay in that moist cold air area for a while.  If you fly over open water or enter a warmer patch then the ice can disappear quite quickly with a slight rise in temp also if you climb too high and the air gets colder then the moisture turns to ice crystals and won't stick to the skin.

Edited January 1Jan 1 by aerostar

It's interesting.. if I fly over Chicago and temperature drops below 0C, the rain get converted to the snow right away! However, same condition over central California flying at FL240 at -30C OAT rain still depicted as rain! Now i suspect Asobo generate icing base on longitude. Basically ice appears above certain  parallel in northern hemisphere which is incorrect way

I've just flown in South Korea, minus 3, and through clouds and no icing.  In the PMDG 737-800, MSFS 2024.