Well at least you had a go mate. Thanks for that !

By all means please post any bits of information you think is relevant - especially circumstances in which the problem occurs, with screeenshots if you can.Hopefully this will assist the ASA guys in finding a solution - and it keeps this topic at the top of the forum.

Hello,I have been separated from ASA and since then no more problems.After I hifisim of ASV/ASG ASX ASA bought, I find it very unfortunate that one is left with the problem alone ...Gru

I am still wondering whether this is an FSX or ASA related issue. I believe that it was concluded somewhere that it is related to FSX and not to ASA. However, with ASA I am experiencing this problem every time now whereas with FSX's real-world weather I have never experienced it..

No question there. I have never seen it without ASA. I have used REX for over 300+ flight hours since the summer and never once did I see 40C at FL38. :( It is most definitely an ASA program IMHO.

I have always experienced it in FSX and in ASA. Not sure what the above poster was flying when and if he had FSX for long before adding ASA, but if you have had say a Level D or PMDG aircraft and used FSX you would have definitely seen it without ASA. Or maybe he has always used REX and not had any time at altitude in a well modeled aircraft like the L-D and PMDG with the FSX engine, but I actually only recently bought ASA. This issue is one of the reasons I bought it for. Because I have dealt with it in FSX since its release. I can't say I have seen this in Rex2, but I'm not sure if I ever did any long hauls using their weather engine yet either. I am PMDG user and use ASA mainly for the added weather smoothing and hoped it would fix this issue. I run into this often when flying high altitudes on long trips. I unfortunately though, never noticed what the temps were, but after reading up on everything lately will pay added attention to it. I have to change my thrust to "CON" just to keep from stalling. Anywho, good luck, hope to hear of a fix in the near future.I will fly a long haul with R2 and see what happens soon as I get the chance.*Also to note, I have been only using FSX's wx for the last month since it seems to be the only one that brings in my REX textures (Clouds) gradually, rather than having them suddenly change in an instant from clear to full clouds or vice versa (or of course, in between :().

Sorry, I'm dim, could you explain further?You say:1) I have always experienced it in FSX and in ASA.2) If you have had say a Level D or PMDG aircraft and used FSX you would have definitely seen it without ASA.Those two statements seem to disagree with each other.Have you yourself ever definitely experienced this problem with only FSX weather?

Sorry, I'm dim, could you explain further?You say:1) I have always experienced it in FSX and in ASA.2) If you have had say a Level D or PMDG aircraft and used FSX you would have definitely seen it without ASA.Those two statements seem to disagree with each other.Have you yourself ever definitely experienced this problem with only FSX weather?

I think you missed some things, or perhaps the wording was off, but I said I have experienced this since FSX was released and only recently installed ASA. So What I am say is, I have always experienced it in FSX prior to ever installing ASA and since installing ASA have continued to experience it.Maybe the issue I'm talking about is something different since I never looked at my TAT, but what happens seems to be the same. I am flying level and all is good then I notice my speed is slowly falling, well below what I have set in the FMC. Eventually this leads to a stall. Or I will have a message come up saying Max alt changed to FL240 from FL370. The other issue is all of a sudden I will have a 30+ knot increase in wind which causes my plane to increase throttle to maintain speed which ends in getting the "See Saw" effect of rising and descending a few hundred feet. I thought this was a due to a sudden drop or rise in QNH creating this behavior so have always just looked at that. I will start looking at my TAT more often now that I read these posts. Once again, maybe these issues are different then the ones discussed but I don't know since I cannot honestly say what my TAT was.I don't understand how the statements above contradict one another. To further explain.I have experienced this problem in Both FSX and ASA, meaning as I've said, I had this porblem since FSX, then (Years later) bought ASA in hopes it would fix it, but it hasn't. I still continued to use ASA for 2 months and had the same problems so stopped using it. I have always experienced it in FSX and in ASA weather, regardless of what weather engine I use. The person above me said he never had seen this problem outside of ASA, and since I read the other posts on this topic and people said they tested the FSX default Aircraft and saw the high TAT but not the behavior associated with a the high TAT, that only a realistic model model would show the actual negative effects, such as the LD, or PMDG, that makes me believe if he had flown either of the two mentioned aircraft in FSX and not the defaults, that he would have seen this and not made that statement. I also have very little time on default heavies at high altitudes in FSX and have always loved the more realistic models. Some people may have used FSX fo years and only recently got a fine addon aircraft that models the weather enough to show these bugs perhaps. All I know is the reason I bought ASA, was:A.) To help stop the sudden Huge changes in Winds.B.) To help stop the sudden loss of thrust, which what appears to be the same thing is being discussed here. (What I thought was a Baro issue)Again, I will pay more attention to the TAT. I also don't fly the PMDG 744 that much anymore since I also Recently bought the MD-11 and am using the little sim time I have to learn the systems and procedures of it. One thing I have noticed so far is the problems I had in the 747, I've yet to see in the MD-11 "So far". Then again, I have yet to do a lonnnng haul in it also.One final thing to point out is that Most of my flights were always heavily loaded flights and long hauls, minimum of 6 hour flights, with many 8 - 12. So if you have done as many of these flights as I have, you would see this problem very often. I recommend before going to bed, setting up a long haul flight, get it to your first cruise alt of say FL210, then leave it. Without touching anything (keep the Alt in the MCP FL210) and the AP in control. Chances are (from my experience) it will have crashed into the ground by the time you wake or it will be doing the see saw effect I mentioned. Where it is rising then descending repeatedly anywhere from a couple hundred feet to several hundred feet.I honestly don't know what a third party weather program can and should change. I hoped it was everything. QNH, wind, temps (TAT). Does ASA use as one post mentioned, corrupted FSX data? Does it take from FSX then feed it back? It was my understanding that it disabled FSX's and used it's own, therefore no abnormal wind changes, baro going from 29.04 to 31.10 in half a second etc. So with or without ASA, the problems I listed 'Exist' at leat for me.I apologize if these are different issues, but they don't read like they are to me.

What you are describing is most likely a wind shift. If a headwind suddenly becomes a tailwind, you will loose airspeed. If the change is big enough, you will loose altitude as the airplane struggles to keep you above stall speed. I use FSUIPC wind smoothing to try to minimize this, but it isn't always possible.The problem discussed in this tread is somewhat similar to the FSInn weather bug where the sign of the TAT switches from "-" to "+" as you climb above a certain altitude - except of course that the FSInn problem is easy to reproduce. The similarity makes me wonder if the root causes are also similar, i.e. some error either in simconnect or in the way ASA uses simconnect.

OK, this is a very specific problem, nothing to do with wind shift, nothing to do with variations in altitude of a few hundred feet.What we are talking about is a sudden shift in temperature (TAT) from a negative number of about say minus 20 degrees to something more like plus 40 degrees.This causes the engines to lose thrust almost completely and big loses of altitude - thousands or even tens of thousands of feet as he aircraft tries to maintain spped above stall.ASA guys - any update - haven't heard from you for a long time.

...and it's not limited to fsx either, thre are references to fs9 users with this problem in this thread (and using add-ons other than pmdg and level d) - implies simconnect isn't the issue.

ailchim,There are no updates from us on this issue so I haven't been able to post anything new.Let's be clear that we are referring to the issue where ASA is reporting "normal" temperatures but planes are not, not where the data in ASA might not be accurate.Thanks,

That is a fact is it? You have been able to confirm that ASA has correct temperatures when aircraft are indicating something different?It's the hardest piece of information we have then and implies that the fault lies in FSX presumably, as several different aircraft are involved - notably from Level D and PMDG.Am I understanding that correctly?

Hi,I am going by the posts in this thread. I have never experienced this so that is the only thing I can go on.

So we are back where we started then:1) An intermittent problem with very significantly raised indicated TAT at altitude causing engine management systems to reduce thrust to almost zero.2) Arising on various top-end add-on aircraft (at least PMDG 744 & MD-11 and Level D 763) plus apparently default FSX airliners. 3) Possibly (in my case anyway) associated with restarting saved flights and therefore some sort of over-write of saved weather on ASA refresh?4) Problem does clear if ASA is disconnected & FSX weather connected.5) Does not always clear if ASA is refreshed.6) On the basis of the posts here, you are not presently attempting any fix, as I understand what you have said.