Vaughan,yesterday i was flying the PMDG 737 NGX in Germany. Programming the FMC step by step and thre was nothing wrong with the calulatio in the ND. I will check that tomorrow again and will keep you informed. From now I can not understand what I did wrong before!!!!!Best RegardsHolger - EDDP!

Vaughan,just departed in KSFO DEST PHNL. I tried to find what I did wrong or what caused the wrong time. I made the FMC preparation step by step. CO route - dep route - ZFW - every thing o.k. Than I put on the PERF Page 1 under LSK4R the temperature given from aktive sky in it and after that input the time for the next waypoint in ND goes wrong. after reloading the plan and the preparation of the FMC without entering the OAT under PERF INIT page 1 LSK4R the calculation on the time in ND is now correct. Now I will check the manuals!!Are you entering the OAT given from weather program under OAT PERF INIT page 1 (LSK4R) ??????Best RegardsHolger on the way to Honululu Int. airport

Holger,What value did you use for OAT?Did you do a screenshots of your FMC Perf init page(s) for us to look at?

Holger,I just did a quick test "without" real time clock.I get a 1 hour error ... OAT has nothing to do with it on my PC.I entered OAT value first and the route time did not yet display on ND, then all other values were entered.Click on my screenshot to make it larger.I will have to do a full flight setup and use real time clock after work today a see what happens.

Vaughan,I was using for OAT the TAT on the TAT on the upper left corner on the ENG PRI Display. That input on PERF INIT page 1 LSK4R caused the wrong time. Now I am still on the way to PHNL (IVAO) and all time calculations are correct! And sorry,how can I do a screenshot??Holger

Holger,I did not use real values for OAT.. I just put any numbers in to see what happens.After work (I am on my way out the door now) I will set up a complete route with RTC and use real values from Active Sky reports.

Vaughan,thank you!

I also use FSrealtime and on the ground at LAX and it puts it to an hour ahead of current time should be UTC-8 always shows up as -7Not the clock in the plane but the clock in FSrealteam.Also - This only became an issue after the Day Light Savings time change just under a month ago

Holger,Rebooted FSX PC.My Wx is on a second network PC (ASE) .. started it. Got WX data.I set up a flight KATL-KDTW FSBuild.Started FSRealTimeStarted FSXLoaded PMDGNGX -800 KATL cold and dark.Connected FSRealTime.Took many screenshot during preflight setup/FMC data insert.No problems seen.I will display the last screenshot which shows times are OK on ND.Time was also ok on FMC prior to data entry (screenshot).Also, FSX time was ok (see screenshot)."Click" on each screenshot to make it larger.Did this information help you?

Vaughan,Thank you for your assistance. All what you did worked also for me.Did you enter the TAT on the PERF Page 1 under LSK4R (the temperature given from aktive sky) and after that input the time for the next waypoint in ND goes wrong!After that I checked the manual under FMC preparation and there was nothing written to put the temperature on the PERF INIT Page 1 LSK4R.It might be interesting for me if you enter this temperature in the FMC what is happened than with your calculation an the ND???Best RegardsHolger!

Vaughan,what settings are you using (under tools) for the fs real time. I can see PM behibd the time but I dont have!Best RegardsHolger!

Holger,I set up the entire flight.You mentioned: "Did you enter the TAT on the PERF Page 1 under LSK4R (the temperature given from aktive sky";No, I set up Top of Climb Outside Air Temperature .. per ASE.I did not initially include the screenshot but here they are:

Vaughan,what settings are you using (under tools) for the fs real time. I can see PM behibd the time but I dont have!Best RegardsHolger!

I am not sure what you are talking about.e.g., RTC 11:36PM = 2336 (military 24 hour time) on PMDG's clock.

After entering T/C OAT (to see if I had any problems, which I did not, I entered CRZ wind info:

Vaughan,my problem caused when entering the TAT (on your sceen above 19 on engine display) into LSK4R on ACT PERF INIT Page 1 instad of the T/C OAT!!Best RegardsHolger!