Setting N1 on Approach: B737-800
Hello guys
Various ways have been discussed with me in regards to setting your N1 on approach when fully configured with either Flaps 30 or 40. Ball park figures to start of with are 55-56% N1 for F30 and around 64% for F40. Recently I was told that in order to establish a rough N1 setting for approach you should take your estimated landing weight from the FMC and use this as an N1 setting for F40 (ie 61t = 61%) or take the mass minus 5% for F30 (or was this the other way about??). Until now, I have been taking a rough figure and working from this after disconnecting the A/P and A/T. However I feel I should be more accurate.