Max landing weight, dual engine glide speeds, for 5 different types, are between 215-240 kts.
All of our a/c, except one, publish dual engine flameout glide speeds.
18:1 is 3 n.m. per 1,000. I recall reading that Airbus recommends 2.5 per thousand.
If you're a TRE you can do this is the sim - 250 kts at 10,000'/40 DME or 250 kts @ 5,000'/20 DME(typical arrival 'energy' gates). IMO it's an excellent demonstration of the aircraft's gliding ability and energy/drag management.
It's nice to know, at least no wind, that you can deadstick from the descent profile and might, or will, reach the airport. If you're below the profile you also know instantly, as Sully did, that trying to glide to X is impossible.
Air Transat lost the second engine at approx. 34,500 65 n.m. from the airport, had to do 360's, and was still fast and high on final so 2 n.m per thousand is more than enough altitude/distance.
Last edited by misd-agin; 22nd Jul 2012 at 21:11.