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IAS hit: X-winds, online wx, and FSUIPC - Help !

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When I hit a x-wind at high altitude in a jet, it can knock IAS 30 off my climb or cruise speed in an instant. It just happened in the Ariane Southwest 737-500 climbing thru FL230 to FL240 and BLAM!, my IAS fell from 280 to 251 as the wind went from 349 to 289 degrees. I repeated this several times and watched from SPOT view as well as cockpit view. I use either FS9 online wx or FSMeteo wx and I think this instant speed hit happens with either one. I've got FSUIPC set to smooth wind change to 5 knots/sec but it doesn't seem to work. Am I doing something wrong or is this just another MSFS phenomenon ?Appreciate posts, thanks!JS

Jonathan Sacks

Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO,

12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals,

CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96

FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.

This is another FS9 undocumented feature, probably left in so flying does not get boring :-)If you look in this forum and ActiveSky forum you will find plenty written about the problem, what you won't find is an MS fix for it.The smoothing in FSUIPC only works with 'global' weather whereas FS9 and external weather programs use local weather.There are at least two people working on the bug, hopefully they will be able to fix, or work a round what MS broke.

  • Author

Vulcan:Great reply, thanks. At least I know I'm not missing an obvious fix and that it's not just me !JS

Jonathan Sacks

Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO,

12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals,

CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96

FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.

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