usefull

Could someone explain how to use the L/D feature, in cruise, on my L-Nav. What should I do when it show a L/D of 99...etc? Thanks.

depends on what you are trying to do... if your trying to stretch your glide and save altitude.. your doing great.. slow down some more if you can.. you could be climbing or in a level glide

if your in a contest.. fly faster.. you are flying straight ahead in lift and could be flying faster..

BT

Call Ripley's

keep doing it!

Gilles wrote>>>>>>>>>>>>>>>>>>

I have tried looking at it a few times on final glide and to tell you the truth, I think it is completely useless information. In the first place, it doesn't stay steady, does it? Hit a bump and it says we are doing 99:1, hit some sink and is says we are doing 20:1. Just what can I do with this information? I watch the 'altitude required' and rate its change. That is to say, if the altitude required to make the glide, is increasing slowly, then I am doing better than expected and might thinking about increasing my MacCready setting (speed up, some) On the other hand, if the 'altitude required' is decreasing, we got big trouble, right here in River City. We need to slow down by decreasing the macCready setting and we may want to take the next lift that presents itself. JJ Sinclair

It's not useful (IMHO). Use the 'netto vario' function in cruise instead (if available): the needle displays what the airmass in which you are flying is actually doing at the very moment. In calm air it should read zero. Many times you will find areas with positive or negative readings; correct your heading by a few degrees and evaluate the results.. A few cm/sec of rising airmass (not unusual in the late evening for example) can make a huge difference to your glide.

Aldo Cernezzi