I read a very interesting paper by KLM on fuel efficiency. KLM does a lot to reduce consumption of fuel. Hedging, other procedures, cont90/cont99, make stuff in the cabin lighter etc.
The paper shows that things like:
-starting the engines after pushback
-lower descend rate
-tank at the lastest when all load figures are known
-apu shutoff when ground power unit is available
-flap 10 iso 15
-n-1 taxi in
-idle reverse
-start apu later at boarding time
will lead to a cost reduction of Euro 4.050.800 per year on the B737 fleet. Per flight the reduction in fuel is around 62 kg when above procedures are done.
KLM does 6333 stretches with the B737 per month. Ryanair will do much more.
Last edited by 1stspotter; 4th Jan 2013 at 10:19.