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Thanks Avery. I think, this time was my joystick(Saitek) issue. After I recalibrate the neutral pos., all is back to normal, at least for now.

When climbing after go around, having N1 engaged & HDG armed (green lits), after 1000 AGL my AP(either one) never engage by one push. Needs repeatedly few times. Obviously not right. Any idea why, please?

I need magdec bgl. file 2005 edition for my FSX. Any directions, please.

Thanks, guys.

I was at FL350. Mach 0.78 is over 500 Knots. Would never realize, high alt. can change speed that much. Thanks, ddswh1pk0s.

My NGX followed FMC high alt. cruising speed at 0.78 Mach, but PFD speed tape stopped by 268 Knots(red dots over 270 Knots). PFD speed was 0.78 Mach, and tape at 268 Knots. My PFD speed tape always shows red dots over 340 Knots. I can't figure out what is wrong with that. I think, it is the matter of setup or preprogramming. Any idea why, please ?

Sorry, I missed FMC throttle setup. After I reset throttle manual override to NEVER, my VNAV works properly. Thanks again, scandinavian13.

I usually keep my throttle lever low when descend, but never really care to be all way back. That may be the issue. Let me try again. Thanks, scandinavian13.

I have no option to keep right descent speed. That's why I'm using SPD INTV. I set target speed at 200knt in FMC descent page below 10000ft., and VNAV still spool up engines and speed up way over 250knt. Is there any more requirments to force VNAV control waypoints speed constrains ?

My NGX, regardless target descent speed (set at 240knt) in FMC descent page, when below 10000ft, at VNAV descent accelerate up to 270knt, then just before DECCEL point slow down, what cause passing next waypoint at way too high speed. Using speed interv. button. My VNAV simply ignore waypoint speed constrains. Any idea, why ? Thanks.

My NGX TOGA works only before touchdown and only with A/T armed. After touchdown(before engines reverse) when getting airborne again, TOGA is dead. FCOM says, can be activated, when airborne again with A/T ON or OFF. Tried with both FDs ON or OFF, A/T ON or OFF. Using FSX with no extra adds-on. Windows 7, 64bit. Need a help, please.

Yes, there is a clear guide in tutorial #1, page: FINAL APPROACH. Somehow I'd missed it before. Have my appreciation again. By the way, there is no Tutorial #2 in my package. Any idea, where can I find that?

Yes, I realized that and always try to be ahead of the aircraft, entering lower speed of waypoints set prior to FF(full landing configuration) one. The problem is, VNAV, regardless, still try to keep 180-200 knots up to FF, which is obviously wrongdoing. I'm simply forced to use speed intervention, when perform RNAV approach. Just want to know, it's normal for this PMDG plane, or there is a bug in my 777 FMC. Thanks.

Appreciate that, scandinavian13.

Thanks for good advise. I set A/T manual override at" IN HOLD MODE ONLY". No idea, how to prevent it by not adjusting my hardware. Need more info., please.

Yes, I modified them way prior to T/D. I like to be more in control using intervention knobs, manual modification, controls, etc., but if you let VNAV continue approach, the plane will hit(despite speed restr.) FF point with speed about 200 knots. Why FMC doesn't follow my commands(restrictions) entered into it ? Hard to believe, the real plane will do that.

It may be glitch in my 777 FMC. Here is, how it's computing descent profile : KDFW- RNAV-RWY17C(last segment): BOSSI 240/6000A-3NM-PENNY 240/5000A-6NM-ZING 240/3000A-2NM-JIFFY 170/2300A-5NM-RW17C170/612. Obviously, no way to reduce speed by 70 knots within 2 nm when descending. After I modified(lowered) speed of all these waypoints, on next attempt, the plane still flew too fast passing waypoints with higher than restricted(modified) speed(drag required prompt). My 737ngx FMC computing this approach right.

Yes, I think 737 FMC is a different design as for midsize mostly short flight jet. Thanks.

It was short flight below 10000ft (I missed that info. in my initial question, sorry). Plane entered into descent segment with 250 knots, which was way to fast, despite modified lower speed in FMC. Thanks for good response, anyway.

Of course, I can, but this is VNAV job.

It's not better, then brake hard just past T/D ? Which airlines would like that ?

My 777 does not follow waypoint speed restriction (to slow down before descent). Have to manually reduce speed using speed intervention knob. Either, after selecting lower descent speed on FMC Desc. page, the plane supposed to reach that speed, before T/D waypoint ( as 737ngx does), but it doesn't. I don't think it is normal for this plane, isn't that ?

Yes, I did. I think, it is a bug.

Yes, it is, with full UAC rights.

My 737ngx ldg alt indicator rapidly jumps to wrong altitude just before touch down. I assume, it goes back to departure airport RWY elevation. Any way to fix it, please?