737NG PERF INIT page: CRZ WND?
To all the 737NG pilots:
Which wind should be programmed into the FMC PERF INIT page during pre-flight? The average wind along the total route, or the wind at the TOC?
That entry has a direct effect on the CLB speed calculation (punch in some trial winds on the ground and see how the calculated climb speed changes with different winds. The climb speed range on the 800 goes from 275 to 315 KIAS I believe), so I would guess that it also has an impact on the fuel consumption. The average wind along the route may differ significantly from the TOC wind though, so which one should it be?
According to Mr. Bulfer it's the TOC wind, but some (or many?) operators use the average wind.
I appreciate your inputs!