Quote:
Originally Posted by UFOGUY
Well it's not so much the fuel that your particular flight is saving, but the total amount of fuel company wide. If everyone flew that way (steep descents at idle thrust) over the course of a year it may add up to a huge savings. Save money where you can I suppose. Personally I haven't had too much experience experimenting with different descent angles yet, but I normally use either 3 or 3.5.
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Heres the catch though, what about all the times one would do a 4 deg. descent to add thrust to level off and fly at lets say 75% for awhile. On the other hand lets say you did 3 or 3.5 deg. for a slightly slower descent at 40ish % to get lower altitudes along the way and never having to add thrust to level off. I know theres many scenarios here but think about it company wide with all the different scenarios we get in a day how can we be sure that a 4.5 deg. glide is saving the company money.