Morten

Hmm... I see you also have a climbrate of 2-3000 fpm just prior which is very high at that altitude/weight. Might be a VNAV/A/T/vertical profile issue. Thanks for the video.

If this happens again, go in replay mode and take a screenshot of the panel just prior to the problems starting and after. Make note of aircraft weight. Also make sure you didn't accidentally deploy the speedbrakes, flaps etc

Yes, the short period damping is modeled (if the aircraft is made correct) http://www.xplanefreeware.net/morten/MOV/pitch.mp4 Also the long period phugoid oscillations are modelled M

I can assure you the Gizmo developers and IXEG coders work very close together to optimize both Gizmo and the IXEG code and strategy to give the best results. Off course there will always be room for improvement, but to insinuate that either Gizmo is badly designed - or - that the IXEG coders are incompetent is not constructive. Topic closed.

If you move your controls (yoke/joystick) while the AP is ON, the AP takes this as a signal that you want to override the autopilot, and it then goes into CWS mode (Control Wheel Steering). Constant pitch or roll. So if you accidentally bump into your controls with AP on this will happen. it CAN also happen if your hardware is not the best and sending signals (spikes) when it is not supposed to. If so try to increase the null-zone in the settings.

Another nice feedback we received the other day from a real 737 pilot Guys, I must congratulate you guys on what a fantastic product the IXEG 737 is! I have just started work as a First Officer on 737 classics (mixed 300s and 400s) with xxxxx airline in xxxxx. For the past few months I have been using this product since the day it was released and I can categorically state that this is highly effective as a "study aircraft" in X-Plane and worth every penny! It helped me prepare for and get through my type rating, and I am still using it as a home study platform to help me get through my line training. If there is any way I can contribute to the ongoing development of future versions, please feel welcome to ask any time, I will be delighted to assist. Kind regards, Allan

There is no such thing as two identical and perfect engines in real life. Parameters will always vary somewhat with age and maintenance etc, this is normal and does not "need to be fixed". Offcourse it maybe a "nice to have" feature to some, but thats another category than a "must fix". M

You need to calm down and contact X-Aviation support, they will help you out. http://www.x-aviation.com/catalog/contact_us.php M

Yes..

The physical tank capacity of about 35.000 lbs is correct. The flight planner however has a max trip length limit of 2000 nm. In real the theoretical limit is about 2800 nm. But offcourse everything depends on your landing weight (ZFW+reserves), wind, cost index, etc. Here is a table that goes to 2800 nm

Another great video by Greame is just released and added to the list! (LFMN VNav)

Alot of work has already been implemented for the next release which will contain bugfixes, 3D & systems updates. With XP 10.50, XP 11 coming soon, new OS's etc we also need to coordinate with the Gizmo developers to ensure good release. Work continues

Could it be some antivirus or other 3rd party programs/plugins you have that might cause a conflict? Try disabling all other XP plugins and antivirus and see if things go back to "normal".

We are off course thankful for the information that Sierra causes issues, might give us a head start in solving it and warn other users that are considering doing the same As long as everyone understands that installing X-Plane beta's, OS beta's, new 3rd party plugins etc always comes with a risk with regard to the 737 not functioning properly, feel free to do so. We will off course do what we can to solve whatever it is, but it might take some time depending on what the issue is. So if you are a 737 addict, let the "beta addicts" have a go before you update yourself

Many of the XP default failures will work, others not. We don't know exactly which at this point. Our own failure model will get expanded later

Jerico, you obviously do not know what you are doing here. 1. You have changed the gear SPRING CONSTANTS and DAMPER CONSTANTS, which we know are spot on! By doing what you do you are altering aircraft performance on takeoff, crosswind and ground handling in a negative way. We do not want you to encourage people to do this! 2. Your gear comparison photo is very inaccurate to put it mildly So for these reasons I am deleting your "fix". Any flightmodel changes need to go through us - which means you need to document everything PROPERLY and submit it to us and we'll take a serious look at it. XP's ground spoiler model is most likely not perfect, but a "hack" like this is not the way to fix it. Topic closed

Maybe something with the prefs files, very common with new XP versions... so if you experience "weird" behavior after an XP upgrade, always delete the old prefs.

About the gear, it is very unclear what you mean and what your reference is. We are offcourse open to debate flightmodel related stuff, BUT "undocumented claims" and "I think" type of engineering is not how this aircraft is build. M

Cl will reduce obviously, both wing and flap, so you get more weight on wheels for the brakes to work better. Cm will not change very much. What also happens on deployment of groundspoilers is that the total CENTER of lift is moved FORWARD on the wing. This again results in a pitch UP tendency right after deployment. This is why on many airliners there is a timedelay on the outboard groundspoilers deployment (usually 1-1,5s).

Hi Jerico, Thanks for interesting subject. You are mixing up speedbrakes and ground spoilers. We have extensive data on the speedbrakes and spent dozens of hours on testing and finetuning it. So you can rest assured that the speedbrakes are correct. You are not supposed to use speedbrakes with flaps, so flap Cl is not there an issue, only wing Cl. As for the GROUND SPOILERS which is what you are talking about thats another story, we have used XP's default model those. Don't remember exactly how XP models those. We might look into that if we find some good documentation on it - thanks for sharing. As for the trim units at different CG's, that also depends on flap setting, but we'll check the numbers again, easy fix. M

Real pedal force needed is between 60-82 lbf at low airspeeds...

Lucky it wasn't a -800....

Oil pressure of +/- 3 PSI?? sure about that? We have random engine aging system, no two engines are alike. They are supposed to be a bit different.. M

Incredible job guy's!!! LIVERY LIST M