Noise Abatement Procedure
Currently,there are 2 noise abatement proc. NADP1 and 2.
1.Which procedure is more fuel economical and why it is so?
2.And also how the difference in thrust reduction and flaps/slats retraction contribut in noise reduction?
3.Are there any differences between Boeing and Airbus procedures?
Enlighten me please. .........Highly appreciated.