IFR Protocol Query
Joined: Mar 2011
Posts: 1,407
Likes: 0
From: engineer at large
No worries...I cant understand why they are so stuck with the RNP idle descent...
when you look at it, at a 3 degree GPA, its not a whole lot of throttle to go 180 or 160 on final...especially with CDA...
Look at FL400 to FL50 CDA idle descent fuel savings compared
when you look at it, at a 3 degree GPA, its not a whole lot of throttle to go 180 or 160 on final...especially with CDA...
Look at FL400 to FL50 CDA idle descent fuel savings compared

Last edited by FlightPathOBN; 31st August 2012 at 19:21.

Joined: Dec 2006
Posts: 2,486
Likes: 8
From: The No Transgression Zone
Sir the FAA and the airlines are in the same racket together...
Just saw your last post...interesting figures...it does all add up after a while though...in fact I think that's why AA had the Silver Birds at one point, cuz the weight of the paint about 200-300lbs increased fuel burn, ironically this increased maintenance costs...but if they don't have the capacity to implement the scheme appropriately, I can imagine that they may actaully waste fuel with holds and such...engineers can never win!...

Just saw your last post...interesting figures...it does all add up after a while though...in fact I think that's why AA had the Silver Birds at one point, cuz the weight of the paint about 200-300lbs increased fuel burn, ironically this increased maintenance costs...but if they don't have the capacity to implement the scheme appropriately, I can imagine that they may actaully waste fuel with holds and such...engineers can never win!...
Last edited by Pugilistic Animus; 31st August 2012 at 20:04.





