It seems that planes are icing in clear skies…
That’s new…
Anyone have that ?
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yep, happened to me yesterday in tha PC6. Not sure if realistic or not.
Yes, I also had that yesterday at -3°C with dew point -7°C and clear sky.
Time, location, altitude? I think the humidity and mist they introduced can cause this. Freezing fog and frost in clear skies is a real thing, but if this is behaving like the simulator’s cloud based icing then it’ll be way too fast and excessive.
For me it was yesterday about 10:42 UTC at the gate in KIAD (logbook). Clear sky, no fog or the like, dry ground (relative humidity approx. 81%). The A320 was completely iced up like cloud-based icing.
In case this is reported often, could you move the post in Bugs and issues?
Ok, I move it.
I submitted a bug report (although it shows up as ‘solved’ not sure what that means) as I am experiencing the same thing.
In my case it turns out that the airport I am flying out of has an INOP freezing rain sensor that is reported in the METAR as FZRANO (normally freezing rain should just be FZRA)
The METAR also shows clear skys (CLR) so it appears to be interpreting this as clear skys with freezing rain.
The METAR that is causing the issue for me is:
METAR: KWVL 250256Z AUTO 32003KT 10SM CLR M04/M09 A3010 RMK AO2 SLP225 T10391089 58010 FZRANO
You can see your METAR by looking the airport up at AWC - METeorological Aerodrome Reports (METARs) or by just clicking weather when at the airport and selecting ‘METAR’ under ‘LIVE WEATHER’
interesting…
Yes, I had this today. KLAA 260853Z AUTO 22008KT 10SM CLR M03/M13 A3022
There’s no way to de-ice the aircraft on the ground, so we can’t have this “feature.” I tried to use the DA62’s de-icing but it didn’t work. Wouldn’t even lift of the runway.
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Description of the issue: The icing bug has been an issue in the sim for a long time 5 years later and it’s still not fixed. I should not be sitting on a tarmac building up ice as if I’m inside a cloud and this has been an on going issue anywhere in the world when it’s -3 or greater
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Description of the issue: Flight in cold weather (-11C) but no icing conditions present (e.g. no clouds, low altitude (1000-1500 ft MSL)) results in icing on airframe, prop, pitot and wind shield with performance deteriorating. NB, not talking about carb icing. There should be no icing effects outside icing conditions (low temp alone is not sufficient for icing).
If applicable, which aircraft is experiencing this issue: C182T (Carenado)
[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue? No, did not remove them
How often does this occur for you (Example: Just once, every time on sim load, intermittently)? When described conditions are met (low temp, no icing conditions)
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I know you’ve opened this up under MSFS2024, but I’m wondering if this issue is broader than that.
Case in point, yesterday I Ioaded into the DA40 in MSFS2020 at Mountain Home Municipal in Utah, U76, altitude 3100 ft, outside temp -5C.
Immediately upon loading into the parking spot, my front windshield was 100% ice covered. I tried taking off and it was obvious the plane was severely underperforming, I assume due to airframe ice.
Weather was set to “Live” and it was clear skies, no clouds.
The only thing I can think of - is the ice actually frost intended to be simulated on the inside of the windshield, coming from folks breathing inside the cabin? Obviously, it shouldn’t carry a performance penalty, but it sure makes it hard to see.
I don’t think frost or condensation on the inside of the plane is simulated. This is external ice accumulation when the humidity is high or there is mist, but otherwise sky conditions are clear. Essentially freezing fog even though the fog is subtle. I’ve seen it several times and failed missions because of it. You can be flying along in clear skies and seemingly good weather, and then completely ice over within minutes. The issue here is that the effect is extremely overdone.
Ok. I remember seeing clear sky icing like this in the early days of 2020, but I haven’t really run into it in 2024 yet.
Really bad time flying around Idaho, U82. Clear skies the entire flight, and then rather suddenly, 100% icing as I approached the destination. I had to land from external view, and the plane struggled to maintain speed on approach.
What’s the time stamp on that? You’re heading south and the sun is to the southeast, so I’m guessing this morning?
Here’s the modeled sounding for that grid area 3 hours ago:
And current:
There’s an 8-10°C temp-dewpoint depression (T-Td) at 3,000’ so it’s weird that it’s giving you ice, the lack of visible moisture and precipitation notwithstanding.
Interestingly, though, the surface T-Td at McCall (KMYL, 17nm away) is only 2°C. That’s the nearest observation station and I wonder if the sim has that spilling over to Council.
KMYL 271651Z AUTO 00000KT 10SM CLR M16/M18 A3029 RMK AO2 SLP350 T11611178
Looking at the model sounding, something’s not right there. It’s way off.
Ah, the sounding I posted is predicting a warmer surface temp and a steep lapse rate all the way up from the surface, but other models aren’t showing that, it’s cold at the surface with an isothermal to a shallow inversion layer, hence the colder temps and closer T-Td at the real-world surface observation. Not sure why it’s doing that, but it doesn’t seem to be resolving radiational cooling at the surface. They just got a new source for that app, so I need to vet it a bit more.
Other sources are showing anywhere from a 2° to 8° T-Td in the lowest 1000’ AGL, so some are close to that, others definitely not. 
And that, my friends, is why you can’t go on modeling alone.
Anyway, all this is posted as supporting data to the problem. Either way, there shouldn’t be icing.
Yes, probably 9:30-10:00 AM local (Mountain) time.
If I recall, pressure was around 30.55 inmg and OAT on the PFD said something like -15 C.
This has been an on going issue with the sim since it’s been out and it’s happening in 2024 version as well. I constantly have ice on the plane upon startup while sitting on the ground although yes I can just turn the effect off I shouldn’t have to when I’m trying to use this for flight training. Absolutely ridiculous that these people haven’t figured this out yet.
