The following appears in the ASA instructions:Note: Minimizing/disabling turbulence effects can also reduce or eliminate wind shift issues within FSX itself, which may reduce the need to use ASA's DWC feature and the need to use Global Weather Mode (with the potential negative side effect of improperly depicted wind directions and speeds).Does this intend to indicate that the "negative side effect" tends to appear with or without DWC?

Hi,With DWC because it sets Global Mode and with some add-ons like RC4 you get inaccurate reports.

Thanks Jim. The reason I was trying to understand instructions is I have been reading everything I could find trying to fix my weather depiction problem. Using computer (2) in my signature below running FSX and ASA, I'm having a problem with pulsating wind shifts every second. It's so quick, I can't read the wind direction to which it is shifting, but the airspeed indicator needle oscillates about 10 knots and the turn indicator rocks back and forth. This is while flying the default Baron at 4000' or below. It sometimes lets up but comes back. I think that I have FSUIPC and ASA options set as I should according to instructions. I have FSX turbulence/thermals disabled and DWC unchecked in ASA (also occurs with DWC enabled). Can you help?

Hi,If DWC is unchecked then you use registered FSUIPC to control wind shifts. What have you set in FSUIPC?

I have an unregistered copy of FSUIPC and only clicked on the Weather Settings Off button per ASA instructions. I flew yesterday with no apparent problem. Winds were light, and it may just be an issue with higher winds. I'll continue to check.

It now seems that the "twitching" wind direction begins when reaching the elevation of a cloud layer, and continues until above clouds (estimated from Metar report - visually, clouds continue to follow me upward). I tried setting cloud turbulence maximum to zero with no apparent effect. The wind speed is not a factor other than the severity of the twitching.

Hi,Now please try with DWC back On and see what happens.

With DWC checked, where I get the twitching may be different, but I still get it bad. I just made a flight with overcast to broken clouds at 900 to 1500 feet along the route. I climbed to over 6000 feet before the twitching stopped, and I turned around and decended to 900 feet with the twitchilng resuming and never stopping. I have attached a copy of the ASA log.

The issue was finally resolved by deactivating FSUIPC. Now if only ATC had an inkling of what the wind direction is. They landed me with a 20 knot tailwind.

Hi,After you started ASA and FS did you refresh the AI Traffic using the proper ASA Icon?

After you started ASA and FS did you refresh the AI Traffic using the proper ASA Icon?

I don't understand how this would have helped. ATC directed me and AI to the correct runway for takeoff, but when I returned to this same airport within 15 minutes, I was directed to land in the opposite direction with the wind being unchanged. I'm not blaming ASA, but it would be nice if it was able to rectify this.

Hi,You also need to know that there are some situations where AI planes have a fixed approach in FSX and nothing will change them, not the wind, not ASA, not anything, so there are times when this is going to happen.If you use a utility like AI Smooth that can prevent this because those planes may be placed into a holding pattern until after you land.There is more on this in the FSX forum from ReggieF.

I appreciate your input on this Jim (as well as all your help with ASA), but I don't understand what the AI problems have to do with instructions from ATC to me (the user aircraft).

Hi,The ATC system in FS is not perfect nor is the AI system. So because of this, "stuff" happens. It has nothing to do with ASA or anything else, but the ways runways are assigned.