Descent rate final approach
Hi,
I'm an enthusiast and use an ipad flight sim app called infinite flight. I have a question about descent rates. I am aware that a descent rate of about 750 fpm is average for following the glide slope. Do pilots decrease the descent rate when passing over the threshold at 50ft? The flight sim app I use has uses a HUD as it's main interface which allows me to follow the ILS all the way touch down, except for the flare obviously, which I begin at 20ft on a 737.
However, I notice that when continuing precisely on the glide slope after passing the threshold, the altitude callouts 50,40,30,20 seem faster than what I hear when observing cockpit videos on YouTube.
I also saw a video of a 737NG landing with a HUD, and noticed that the pilot eased the descent rate to about 600fpm when passing over the threshold.
Can anyone confirm what is the right thing to do?