I recently upgraded to the new AS2004 MR2 B132 build and noticed that my outside air temperature is much too high. I have read the manual and set the FSUIPC and default settings as recomended in the manual. I also looked at the reports for the Seattle area tonight in the Active Sky nav log and they had said the air temperature at FL330 was -46. My PMDG 737 was showing a TAT of -11. At 26,000 the nav log said -40 and the TAT on the 737 indicated +5. I saw that some others on teh forum has similar problems in previous builds but I couldn't find any resolution. Any advice on how to fix this? Thanks. I posted my .ini contents below.//AS2004 configuration file Build 132[General]WindowPosX = 4185WindowPosY = 6480DefaultWeatherFolder = D:Flight Sim 2004ModulesActiveSky2004SuppressionCeiling = 4000SurfaceWindLimit = 10CloudLayerLimit = 5LocalSuppressionRange = 100MinimumVisibility = 0MaximumVisibility = 50LastPlanFolder = C:Documents and Settingsryebred.RYAN-HOMEMy DocumentsFlight Simulator FilesAAL442IncreasedWake = FalseDisableWindsAloft = FalseAutoConvertPlanFiles = TrueForceDestinationWeatherZone = FalsePreventIcing = TrueOnlineUpdates = TrueExtendedDestinationWindsForce = FalseGlobalWrites = FalseDisableDirectWindControl = FalseVoicePlayback = TrueLocalSuppression = TrueStartupSound = FalseDisableGroundUpdates = FalseUseProxyServer = FalseFogLayerGeneration = TrueUpdateSuppression = TrueOvercastEnhancement = TrueIgnoreFSReadyStatus = FalseFSUIPCWindSmoothing = TrueLimitSurfaceWinds = FalseLimitCloudLayers = TrueAutoGlobalWriteToggle = TrueRainWithTS = TrueDisableUpperLayerGeneration = FalseVisibilitySmoothing = TrueDisableMessages = FalseAutoTimeZoneDetection = TrueUpdateInterval = 10VATSIMData = TrueZuluConversion = -7AloftPredictability = 60WindDriftRate = 5TAFProcessing = FalseEnforceVisibilityLimits = TrueWakeTurb = TrueStartPaused = FalseUseSystemTime = TrueDisableCAVOKClouds = FalseProxyAddress = NONE

Hi There,TAT is not OAT. TAT is total air temperature which increases with airspeed. So this is normal (put FS in slew mode with 0ias to see TAT match OAT). You should be looking for the OAT indication instead.Hope that helps!

Hi,check your OAT in the FMC, PROG 2nd page.At that altitude should be 30-40 degrees centigrade less than the TAT. Remember that the TAT is the OAT (SAT, static) + the rise due to the compression of air entering the probe at high speeds.Hope this helps.

ok, I just did another flight. Below were my recorded temperatures.FL200 TAT= +5, SAT = -14FL250 TAT= +5, SAT = -23FL300 TAT= +5, SAT = -25lvl at FL330 TAT = -12, SAT = -41Temperature report from Nav Log at FL330RBL -45.9This question came about because I recently upgraded both the PMDG 737 and the AS2004 to the latest versions. Climbing in the 737 is now really, really slow from FL200 all the way to FL330 (500-700FPM max). After discussing this on the PMDG message boards and uploading several screenshots, they came to the conclusion that my TAT was way to high for the altitudes I was flying at. The engines can't produce enough thrust to keep a nice climb rate when it is that hot they said. They recomended I check all my AS2004 settings. I tried the same flight not using AS2004 and I was able to climb at a much faster rate. I have read the manuals and checked all my settings but I can't figure it out. Thanks for the help.Ryan

I had something sorta similar with the PMDG and AS2004.On climbing to ALT the temperature was actually increasing, rather than decreasing.It was almost as if the weather was "opposite", cold on the ground and hot at FL310 :-lolMind you, it has only happened to me once, but it was still oddDan.

Without indicating your rate of OAT increase, it it possible you were flying into a warm front or a warm jet stream? Since you say it only happened once, perhaps it was an actual weather change. What were the aloft reports from lower levels to higher levels?

A "standard" temperature at 30000 ft is about -45 C. But this assumes "standard" surface temperature of 15 C. Now if surface temperature at Phoenix, Arizona is say 40 C (quite typical in summer) and assuming the same rate of temperature change then you can expect -20 C at 30000.Michael J.http://www.reality-xp.com/community/nr/rsc/rxp-higher.jpg

OK, I ran the test above with AS2004. Once I reached cruising altitude I reset the flight, closed AS2004, cleared all weather via FSUIPC then switched on the FS9 weather. I ran the same flight and got the numbers below.(with AS2004)FL200 TAT= +5, SAT = -14FL250 TAT= +5, SAT = -23FL300 TAT= +5, SAT = -25lvl at FL330 TAT = -12, SAT = -41(without AS2004)FL200 TAT= -5, SAT = -23FL250 TAT= -8, SAT = -34FL300 TAT= -16, SAT = -44lvl at FL330 TAT = -22, SAT = -50Without AS2004 I climbed much better and reached TOC about 50 miles sooner than with.The numbers produced without AS2004 are similar to what AS2004 downloaded into the nav log. So, I beleive that AS2004 is getting the correct data but somehow it is not being written to FS9 correctly. I tried this test in 3 areas to make sure it wasn't a weather phenomenon. I flew from Miami to Jacksonville, San Francisco to Seattle, and Minneapolis to Chicago. All three flights the climb rate was very low and the temperatures were high with AS2004 and the climb rate and temperatures were much more accurate without.If anyone has any ideas about what is going on, please let me know. I can reproduce this problem every single time I fly so I am happy to run more tests and produce more data if you need it, just let me know what you want. Thanks.Ryan

Hi Ryan,I checked your results against current data at KMIA...Your results:FL200 TAT= +5, SAT = -14FL250 TAT= +5, SAT = -23FL300 TAT= +5, SAT = -25lvl at FL330 TAT = -12, SAT = -41KMIA:FL030: 133/08 (24.8) FL060: 139/07 (18.5) FL090: 148/08 (15.6)FL120: 171/10 (5.8) FL180: 207/10 (-6.5) FL240: 218/08 (-17.3)FL300: 193/04 (-23.9) FL340: 188/08 (-41.0) FL390: 213/07 (-52.8) This is pretty darn close...For better comparison, you should do the same thing, showing your results against the acual data at the specific reported altitudes (18K, 24K, 30K, 34K, etc). That's the only way to compare....You may have used an earlier wx file in the day, which would mean that the temps should have been even higher (as per real life).All across the US right now we have higher than normal upper temps. As Michael mentioned, it's hot outside!As of now I don't see any problem except that FS2004 real wx is reporting temps too low. But we knew that already, and AS2004 fixes this inherent FS9 problem. This experience proves that AS2004's data and depiction is superior.In other words, if it's forecasted -41 degrees, and depicts -41 degrees, I don't see a problem! Lowering the temps would provide unrealistic results. It is normal for a heavily loaded aircraft to struggle when climing at upper altitudes in warmer than normal temperatures. What's your GW when experiencing these low climb rates?If you still note discrepencies, please show me a comparison of the actual winds report for closest station (from AS2004) along with a screenshot depicting your current OAT or SAT and altitude. I'm not doubting your results, I just need to verify! Thanks a bunch!

Hi Damian,My results I posted were from a flight from SFO to SEA about 11:00pm pacific time on August 9th. Ill run the route again tonight and give you the numbers and a screenshot.Ryan

Yeah, I can't remember the actual figures, I didnt record them.Like I say, it only happend once, so it was possibly just an odd weather download or something.If it happens again I will record the detailsDan.

One thing to remember about warm temperatures when flying. Yes, climb performance suffers but on the other hand once in cruise you fly faster so you get something back from Mother Nature ;-)Michael J.http://www.reality-xp.com/community/nr/rsc/rxp-higher.jpg

>FL200 TAT= +5, SAT = -14>FL250 TAT= +5, SAT = -23>FL300 TAT= +5, SAT = -25>lvl at FL330 TAT = -12, SAT = -41how come TAT remains constant (+5) while SAT is decreasing ? Is it possible this is where the problem lies ? TAT would directly dictate engine performance.EDIT: someone on the PMDG forum claims TAT has nothing to do with engines.Michael J.

Hi Michael!I think the TAT is remaining constant from FL200 to FL300 due to increasing airspeed in the climb... Just a guess!

I think you may be right. But I guess TAT is of secondary importance - SAT (OAT) is really what engine performance is based on. TAT is used to find out if your fuel in wings is about to freeze when flying say .. over the North Pole. Michael J.