Hello Everyone...Just reporting back on some findings... Remember these are POSSIBILITIES BASED on OBSERVATIONS: And because weather changes every day, it is hard to make an exact comparison. I plan to run the next series of tests on the same exact weather data. However, I did run into porpoising on different weather data over the two days. The other hard thing to compare is even if you use the same weather data, FS Mateo and Active Sky could produce different results. And couple that with FSUIPC weather functionality adding another factor.In my eyes, reality is the objective.Problem (A) PorpoisingI have never experienced porpoising like what I experienced.Possible Causes:(1) Poor flight characteristics w/ A/C (doubtful as the A/C flies pretty well and it doesn't do it consistantly)(2) Weight and Balance problem (again doubtful because it is not constant)?(3) Gusts and Wind (Possibly, I don't know)I will say that FS Meteo 5.2 was the Weather Engine and porpoising did exist.Problem (:( Strong Down Draft Lost 6000 feet of altitude within a very short time span (maybe less than 10 seconds) Also the airplane was totally uncontrolable (Haven't been able to duplicate this with FS Meteo). Some have commented that this is normal.. I hit pretty major turbulance during flights and I haven't ever lost 6000 feet that fast. Most I have dropped is about 1000 ft (as I recall) usually due to wind shear.This needs to be re-tested. I need to see if it was just a fluke or it is a actual problem..I want to apoligize if I ruffled feathers and maybe jumped the gun, and I should have stated these were my observations. Not necessarily a flaw in either FS Meteo or Active Sky. That is why I am starting a new post in either place. Maybe this could be a flaw in MS FS 2K2 weather? The bottom line is there are many other factors... Hope to let you know more of my observations in the near future..Thanks!BarryI'll post this in the General Forum as well..

Barry,Thanks for the new post. Keep us updated on your findings as you use both programs. Your observations may prove to be useful. We are here to help.Jim