I don't know what happened in my PC, but my jets don't increase their speed capability as they climb, it gets stuck at 350 Knots and if I go any faster the plane overspeeds.I uninstalled FS2k and reintalled it with the same result.Can anyone help me?ThanksLeo

Your first question should be....Is the jet capable of a greater speed than that in real life? This is a very realistic sim and as such will act very realistically. Also, you will not, with the exception of a very few AC and depending on your rate of ascent, be able to gain speed as you climb. Once leveled out, you can begin to gain speed but remember, these aren't dragsters. They take a little while to get up to cruising speed.Mention some of the AC your reffering to and lets see if they are even capable of more than 350 knots.Bobby

Changing the realism options to indicated airspeed should fix the "problem".Doug

Leo, pick two points on your chart 10 nautical miles apart...time yourself between those points. If your flying serious iron you'll find you are actually moving at a much faster rate than 350knots. The reason the speed stays lower than reality is that the air is less dense as you climb. Airspeed indicators measure the pressure of the ramming air minus the static airpressure, and calculate the airspeed. If the airdensity goes down (altitude is higher), it gives the idicator a false sense of slower speed cuz the pressure is less.If the test shows that you are really going faster than 350, this is what's happening, and its a good simulation of reality. Bob B

Bob,Now see even I learned something today;-) But in all seriousness aren't there compensations due to altitude that are taken into account for by either the onbaord computers and or gauges?. I cant imagine a 747 pilot basing his speed on time to distance calculations.Serious questionBobby

As everyone else has said, it's dependent on the plane. Also, what I find helpful is if you're above FL270, you can switch your speed selector on your Autopilot (if you use it) to the mach hold.For example, on the default 737, I can set it to mach .82 at FL290 and above without it going into overspeed (unless I hit a drastic change in the weather, which will knock it into overspeed for a few seconds).When I look at the Groundspeed indicator, however, I'm cruising anywhere between 440 and 510 knots, depending on the direction that I'm flying and the prevailing winds at the altitude I'm flying.

Hi Bobby,to stay in the air, the plane has to fly within a certain range of indicated airspeed, i.e. the speed at which the plane actually moves through the air. On the ground with no winds, IAS, TAS and GS will be indentical. As you climb, IAS will decrease due to the lower air density, while TAS and GS will increase (assuming constant power setting). At cruise altitude in thin air, your IAS may be only 240 or so at Mach .82, but your TAS may well be around 500. If you now throw in a tailwind of 50 kts, your IAS and TAS will remain the same, but GS will increase by 50 to 550. Let's assume, your plane's stall speed is 150 KIAS. Close to the ground you'll have a margin from 150 to 350 or so knots (overspeed limit), within which to fly safely. As the air gets thinner, your overspeed limit will drop, thereby decreasing your margin - at FL390, your safe margin may be between 150 and 240. That's why pilots use IAS rather than TAS or GS. But modern jets do also have TAS and GS indicators (usually on the ND), but they are for information only, not for actual flying.Hope this helps.Cheers,Gosta.http://hifi.avsim.net/activesky/images/wxrebeta.jpg

Thanks G,Crystal clear now.Have a good one.Bobby