Does anyone know why this happens? whenever I set the barometric pressure (hit :( I get the wrong altitude readout in the plane. I get the "right" altitude (the one which corresponds the CTRL + Z readout) only when I set it to 29.92 but that's not all, even when the sim and plane altitudes are at sync - ATC yells at me that I'm a couple of hundred feet above or below filed altitude.....I can't remember what I did recently to triger this awckward behaviour but I had no problems of such nature before.Does anybody have a clue?Thanks//Mike

Here are a couple of thoughts... Above 18000', altimeter needs to be manually reset to 29.92 so all aircraft are flying at recognizable/verifiable altitudes, if you use the "B" key altimeter will be set to readings for below 18000'(in US airspace). Below FL180, ATC controls aircraft flight levels with actual barometric pressure readings, above FL180 standard pressure is used. Also, I've noticed some altimeter gauges show the actual altitude instead of adjusted altitude (mouseover tag) that reflects the correctly set barometric setting.

Brent,Yes, I know the FL180 transition thing, problem is I get wrong readouts at any altitude (often a negative altitude and my TO's are not from holland...)Moreover, how come ATC gets a different altitude than the sim itself?shft+z gives me a certain altitude while ATC tells me I'm either above or below it...Just a thought...can FSUIPC have something to do with it?I did try reverting to previous versions but to no avail...Thanks//Mike

Mike, I figured you probably knew the FL180 deal, but it was a shot in the dark. :-) I've never seen the negative altitude thing. That's got me stumped.I looked through FSUIPC and don't know what would cause those readings in FS. In the Technical section (payware version) there is the line "Allow changes to FS own weather" and down below "Smooth Pressure changes". I don't think that has anything to do with your problem, but it's another shot in the dark. Also in FS9 under Options/Settings/International there is the desired format for altitude readings. Other than that I'm out of ideas. Hopefully someone that has seen and fixed what you have described will pick up this thread. Maybe restart your computer, :-lol (a joke) but seems to fix everything unfixable.

I have been told that outside the USA, countries can set the 29.92 reference at any altitude. I think in England they use 10,000 (one Zero thousand feet) as their ref point.Terry

Mike, Here are a couple fixes I found on a 'search'. Might help you out.1. In FSUIPC:"Enable V/S sign correction" it can be assigned from the technical tab.It concerns the autopilot vertical speed settings and target altitudes. More information is available in the FSUIPC Users Guide that is a part of the FSUIPC download."2. Some panels are squirrely for some reason and require changing/reassigning the altimeter key setting from "B" to something else like "Shift+B" in order to work properly.

Mike,The reason your getting these problems with incorrect altitudes is because of the limitations of the in-built ATC in FS2004. I decided to try it tonight for a short flight. Normally I use the vastly superior Radar Contact.Here's the problem. When you feed a flight plan into FS2004 there's no way of telling the system what your Transition Altitude/Level is. Therefore FS cannot work out when to tell you to alter your altimeter pressure to the standard 29.92 (1013.2).I tried a quick flight from Manchester to Frankfurt and once above the Manchester TA of 5000ft I set my altimeter to 29.92. However, FS kept telling me off for not reaching my next assigned altitude (flight level). Now it could be that it uses 18,000 for the whole world but if that is the case then it's not realistic outside the US.I don't think there's any work-around to this and it's certainly nothing to do with FSUIPC or any internal settings in FS2004. If you want much better ATC control of your flights consider Radar Contact. The program allows you to input TAs for your departure and destination airports together with alternates and a multitude of features not found in the MS ATC. In fact, it was quite a shock using the default ATC tonight to discover just how inferior it is to RC. For more info visit here... www.jdtllc.com/Cheers,