Problem with 737

[WAD3 0]

Well I am now having a problem with my 737 V speeds. They will not appear. I have followed loading a flight plan as I always did. Even started from scratch and placed the route very carefully exactly as it should. Still nothing. I did a search and founs somone had a problem awhile back but no resolution was offered. Can anyone think why this might be happening? The only thing I have done recently was update terminal procedures and Navdata to 0513.Thanks for any assistance

[Guest Ohio330]

Not sure what you mean by "they will not appear" Im assuming you mean that once you load the flight plan in the FMC, the V speeds are blank, causing you to re-enter them. Or do you mean you cannot physically enter the V speeds after you load the saved FP? If its simply not showing up with your previous V speed input from your saved flight plan, there is a simple reason. Flight plans do not save this info for a very good reason. Not every flight has the same variables (wind speed/direction) tarmac conditions (snow, wet) and these varibles (and more) need to be caculated prior to flight so you enter the correct v speed given the present conditions. See the manual for making all neccessary calculations for this.

[WAD3 0]

No they do not appear after I load the flaps I am using in the takeoff page. In fact I went ahead and flew the flight and the approach page gave me a flaps 40 Vref of 215kts. I went back and tried again making sure of my weight, fuel was at 4000lbs. By the way the 747 has no issues.

[ronzie 21]

The entering of V-Speeds needs to be the last step of FMC briefing after all other steps are completed since some steps during briefing can delete V-Speeds. When all is done goto InitRef/Index/Takeoff and LSK again the V-Speed settings. Be sure all EXECs have previously been completed. In other words, after setting up flaps earlier, you revisit the TAKEOFF page and reenter the speeds.Also remember that the V-Speeds do not appear until you LSK them and they will auto-update.I do this without any problems and before I did this I would have the same problem you note.My panels include the 800/900 update by the way.Doing V-Speeds last is SOP according to Mike Ray (United Airlines captain), author of the 700 series simming guide (www.utem.com) which has helped me further understand FMC and flight procedures.

[WAD3 0]

Thanks for the replies. Yes I am sure how to do it. I have had all versions of the 737 since release. For some reason I am having trouble. I think I may have to do a reinstall and see what happens from there.Again thanks for helping.

[Jet Tech 31]

Andrew,Are you loading a Departure runway in the FMC? If you fail to load a Departure runway from the DEP/ARR page you won't get any V speeds after the 800/900 update.RegardsPaul Gollnick :-cool Technical Operations/Customer Operational SupportPrecision Manuals Development Groupwww.precisionmanuals.comhttp://www.precisionmanuals.com/images/forum/devteam.jpg

[WAD3 0]

Yes I am loading the dep runway. This is how I am doing it. as mentioned, No problems with 744, lds763 pss777. I have a feeling something has been lost and I need to do a reinstall.Dep runwayRTEArr runwayclose all discoperf (all fields filled in)Takeoff pageFlaps right lsk for vspeeds with no effectThanks

[Jet Tech 31]

Andrew,Are you getting the Preflight complete message on the V speeds page? Also, have you tried a fresh install making certain that you download and run the PMDG removal tool first to see if that clears up the problem?RegardsPaul Gollnick :-cool Technical Operations/Customer Operational SupportPrecision Manuals Development Groupwww.precisionmanuals.comhttp://www.precisionmanuals.com/images/forum/devteam.jpg