The standard approach on Concorde is the Reduced Noise Approach (RNA), which is flown, usually manually, whenever we have an ILS glideslope available, expect to see the runway by 500R, and can comply with some other minor equipment and runway limitations.. .. .Once on the glideslope, the latter stage of the approach is flown at Vref + 30kts, (min 190kts), down to 800R, where the speed is further reduced to Vref + 7kts, which must be achieved by 500R.. .. .Keen spotters may be able to detect the aircraft pitch attitude increase by about 3° to 4° during this manoeuvre. <img border="0" title="" alt="[Wink]" src="wink.gif" /> . .. .The NHP checks that the approach parameters are stabilised at 500R, and calls "Stabilised". If not, then like any other BA aircraft type, a Go-Around will ensue.. .. .The noise reduction comes from the fact that, being so far up the back of the drag curve on approach, we use less thrust to fly at 190kts than at 160kts, and less thrust whilst decelerating to Vref + 7kts, so, above 500R, we are a bit quieter than if we flew a constant speed approach.