Guys, i dont know how many of you tried this but it worked out for me, http://forums1.avsim.net/index.php?showtopic=241003

Bryan,Whatever the cause may be, this is a workaround that should not be needed.Same as trimming the stabilizer to the minimum greenband value while disregarding the 'official' FMS calculated one.Nice for tweakers, but I think it will be more productive to report our findings based on the normal operating procedures.Regards,Harry

The same thing is happening with me. If I don't pitch the nose down after rotation, it'll keep pitching up until the low speed protection is activated. Hopefully there'll be a patch soon.

I have had the same problem - but now it is solved, at least for me... :( 1.) I changed the MSFS sensitivities for the elevator to 100%2.) The joystick calibration in FSUIPC should also be adjusted (about 15.000) - and without any slope. Give it a try.addendum: XP pro, FS9 + CH

Can you confirm that this occurs after the update to both the FSX and FS9 versions?I am especially interested to hear if it applies to the FSX version. Please confirm that if you are absolutely sure ("I think it might be a bit different.." won't help).

Michael,For the FSX 51 version, I'm absolutely sure now that the FMS calculated TO Stab setting is incorrect.Today I took another approach to do the take-off.As we like to hand-fly as much as possible and also like to do that as good as a well programmed AP, I "asked" the AP to show me how she would use the stabilizer once pitch and speed were stabilized.Programmed FMS as usual, setting STAB-Trim at the TAKEOFF Page figure. (STAB 1)Did NOT arm NAV and PROF modes before and after lift-off.Used both a FWD and AFT CG.Rotated in a normal pitchrate to 17 degrees pitch up and released yoke force.Did a couple of takeoffs this way some selecting AP ON, Some just let the plane go by herself.Some loading and STAB information:2/3 pax, mixed class configurationZFW Fuel TOW ZFWCG TOCG STAB 1 STAB 2171.4 80MT 250.7 21.9 22.1 7.2 4.3Below is: 1 fwdcargo unit removed, 2 aftcargo units added171.2 80MT 250.5 28.1 26.4 5.7 3.2 STAB 2 shows the Stabilizer settings at V2+10 / Fr with Autopilot ON.These values also show up without the use of AP, by rotating directly to the correct pitch attitude, but NOT using yoke input anymore after that. (meaning LSAS AutoTrim IS working).Hope this helps to bring on-ground FMS calculated STAB Setting in line with the airborne required setting.Regards,Harry

Can you confirm that this occurs after the update to both the FSX and FS9 versions?I am especially interested to hear if it applies to the FSX version. Please confirm that if you are absolutely sure ("I think it might be a bit different.." won't help).

Michael,Now I'am able to answer for FS9 also:FS9 version .051:Made the same Take-offs under same conditions and weights as in the previous post:Up to and including the STAB 1 setting all values are exactly the same in FSX and FS9.In FS9 only the stabilized climb STAB 2 settings were different; 4.0 in relation to 7.2 and 4.4 in relation to 5.7BUT note also it's REVERSED: would expect a lower value at the lower stab setting!!!It would be nice if these figures were the same for FSX and FS9, but not essential.What's far more important is that the trimmed setting on ground before departure, proves to be the correct one once airborne.In the take-off set-ups I discribed in the previous post, I have excluded any different feelings about lighter, heavier rotation forces required compared to previous versions.Doing it this way revealed that for both versions the stab-setting before take-off is too much nose-up.As a result of this, rotation requires less force of course.When airborne, Stab and elevator are mis-aligned. ( Yoke centered + LSAS does not mean stab/elevator in line).When rotating to a 'near' FD pitch setting right away, the elevator to stab angle seems to be within 5 degrees, and LSAS is able to Autopitchtrim this difference to 0 degrees.When rotating with too much difference to the FD, LSAS Autopitchtrim may be cut out by one off its conditions being not valid; Stab/Elevator angle more than 5 degrees. This needs a manual trim input to correct the situation.Autopilot pitchtrim works different as you know.There have been many contributions to this thread and other threads on basically this same subject.As I read and understand them, many are a result of LSAS being not able to operate as expected.My conclusion is that much of these comments will be solved for a great part, when we are able to set the stabilizer to the correct setting before take-off.One other thing regarding trim:Really great to see the incidental pitch-ups, when disconnecting AP, are solved with the update!!!!Take a note of that too everyone!!Regards,Harry

Anyone still interested in this thread?Basically (FS9 and FSX alike) it's this:-Stabilizer set before TO according FMS Take-off page.(Note down Stab setting)-If not in widescreen mode, have SD avail during climbout.- Do a normal take-off and rotation to V2+10.-Positive climb Gear Up.- >400 ft Set AUTOFLIGHT. (Manual control will introduce too many differences)- From Autopilot ON to before acceleration at 3000ft observe STAB setting.- Note down Stab setting shortly before passing 3000.Is it only me that's seeing it changed compared to the before TO setting, or are more observing this.Regards,Harry

Anyone still interested in this thread?Harry

Yes I am.Is it correct that PMDG guys are working on that issue? Long time no answer to that topic...Thanks, TOM

I'm also very interested in what the PMDG team has to say about the trim anomaly. It's been a long time since we have seen anything regarding this very important issue. Anybody from the team care to give an explanation as to why these events are happening?Regards,jack

I guess we need a little 'bump' here for the PMDG team...Can we at least get an acknowledgment that there might possibly exist.....Regards,jack:)

I can't answer for PMDG, but we have tried some new air files that work pretty good. They are fixing it. It happened when an adjustment was made to the CG envelope to better conform to actual airplane... or something like like. Anyway, the trim issue has been acknowledged by them and they will have a fix for it.Meanwhile, the easy workaround is to subtract about 0.3-0.5 from the stab setting, which is still in the green, when you have high moments (maybe above 19)... I found that works almost perfectly. It is just a half-degree nose down adjustment and it makes a pleasant difference. Also, get things trimed before activating autoflight... but I have always had to do that with the autopilots I get to fly.

Thanks Dan for the update. Glad to hear that it will be acknowledged in a future fix...Yeah, not having the pipper centered on the cross-hairs of the FD while engaging the autopilot will give the pax an uneasy feeling...:(Regards,j

Hi,I'm new here, basically to find the reason for the 'violent' pitching in my B747-400X package.It seems that with the settings of CG in the FMS, which was around 22%-23%..i had a trim setting calculated to be 4.8 by the FMS. By the way, i flew with different kinds of loads, full, empty, 1/3 and even random...all giving me ard the same trim setting for Take off...after the plane rotates n lifts off, i used the autopilot for the climb...but then...after it hits cruising phase, I switched over to external view...saw that the elevators are in a full pitch down mode, just to maintain level.so i did something which shd not b done in real life..that is to disengage the autopilot without 'holding' the yoke..to see how the plane would behave. As expected, the plane pitched up suddenly and i had to apply full force on my yoke to try to bring the nose down to level flight.Thus..this leads me to a question, won't the plane auto trim itself while in the air? I tried out the actual B737 flight simulator..and it seems that there's auto trimming as is saw the black white trim wheel, beside the throttle, spinning..I did try to manually set the trim in mid-air and it disconnects my a/p...as expected...so did i do anything wrong?Thanks!

Wish you had started a new thread for this and had signed your name per forum rules.First thing that comes to mind is verifying you have advanced animations checked in the FSX options. The AFS should be working the trim during the different phase of flight; also, the trim functions to relieve backpressure at the desired control surface deflection, any visual indication of a full elevator deflection in flight is very unrealistic... hence, my first thought above.