Well, the AVSIM forum "similar topic" function found two threads with no replies on the subject matter I'm about to ask.Doesn't leave much hope for me getting an answer either. Perhaps the yes/no approach when constructing the question will make it easier to answer, so I'll try my best:Reading the FMS manual on page FMS.10.18 Section 5, I'm making the following assumption about the TEMP/WIND Data entry:1. The FMC will only accept HEAD or TAIL component of the actual wind at a given flightlevel?2. if so, using trig, one could get the H or T by figuring out the offset e.g.: Wind = 200/60KT and Track = 180, gives me 200-180 = 20.Calculated Headwind component is: cos(20)x60=56.4, and enter (whatever temp)/H056 at LSK L6?Is this correct?RegardsMorten

Edited February 27, 201214 yr by mortenha69

Yes.

You may already know this but if you open the "legs" page and press "next page" you can enter the winds at waypoint by waypoint without having to calculate before. Just my 5 cents...Manfred

You can insert cruise winds (which is better than just a wind component).Go to the F-PLN page and press the right line-select key for a cruise waypoint. This will take you to the VERT REF page. Go to page 2/2 and insert the altitude and wind speed and you now have a better flight path and more accurate fuel predictions.

Son of a b....! I knew I had seen that page! But I couldn't for the life of me remember where it was!Thank you guys!!!Off to fly LHBP-ENZV with winds aloft calculated correctly, and perhaps a better fuel estimate this time!Cheers!