Vikingair:I have one turboprop aircraft (a Beech Starship) that just won't keep the taxi speed down, even with the condition lever adjusted down. I finally had to install Rob Berendregt's ground handling gauges to control the speed, otherwise the taxi speed could get up to 80 knots.You might give it a try if all else fails. The file is rcbgh-32.zip. I don't remember if it's here in the library files or if I got it somewhere else.