Nice work everybody. I'm curious as to what the lift-scalars were on the old PMDG 737-800 NG as I no longer have it on my new computer set-up. Anybody know what those values were and how they compare with the NGX??..Also, I recall sometime ago in a statement by PMDG concerning the NGX that they worked long and hard in trying to really fine-tune the 'Float' in the NGX since the FSX enviroment was playing havoc with it. I wonder if this impacted the 'Attitude' problem in which we all are well aware of by now??.

Lift_scalar setting in other PMDG add-ons aren't relevant. The flight dynamics are also influenced by the airfile. In the brief tests I did, I found flaps.0, and flaps.2 didn't have any influence whatsoever. So I'm not sure why Tony altered those values. [He appeared to] My concern, is that by altering flaps.0 you influence all flaps, even takeoff flaps. Although, it didn't appear to be very significant in my tests. I still say though,. my advice is do do nothing, so as to avoid adding variables at this stage. I'd say wait and see what PMDG do. I'm pretty sure PMDG would not apreciate added variables to influence their patching process.

I deleted everything last night, reinstalled, and the the issue people have spoken of arised, floating and too much of a pitch down attitude on final flying flaps 30 vref +5.. For some reason I like to help others..

Yeah right! Pull the other one! Martin Wilby

You're starting to get on my nerves Martin.. Go away..

Thats how I felt with the adamant denial, and now sudden about turn. Chill as you would say. Have a sense of humour. But anyway, Glad you are on board with the issue now. Martin Wilby

I should also add, that I think Tony's urge to alter drag characteristics is very misguided. PMDG have worked long and hard to design the flight model, to second guess their research is a bad idea. A minor tweak to the lift_scalar for experimental purposes is okay, but I advise setting it back to default after. And making a note of the setting for future reference. In the event that the issue is proven to be valid, and if it remains unfixed, it's then at your disposal. Martin Wilby

I'm extremely interested in what Jack C., the PMDG member of the Tech Team and real time pilot of the 737NG-800, has to say about this never-ending topic of interest??? Regards to all,jen noulet

I thought it was the landing flap settings that were causing the excessive lift, why are you messing with other areas?

No idea why Tony messed with drag. In most add-ons I've come across before, by tweaking flap.1 or 2, you can avoid influencing takeoff flaps. However, probably due to the airfile, it seems changes to the lift_scalar in flaps .1 and 2 don't make any difference. Hence why the only option for us would be flaps.0. However, from what I saw, it didn't seem to affect takeoff flaps noticeably. I've dived into airfiles before, but as I said earlier, I have no intention of sabotaging PMDG's fine work for a minor issue. I'm quite confident that lift_scalar = 0.8 has it about smack on. But I'll just keep that knowledge for future referance. PMDG are no doubt reading all of these posts, and I'm sure if they feel we have a valid point they will include a fix in the first major service pack. Martin Wilby

If you mess with the flight model you forfeit any right to support here until it's reverted to stock. I will ask Vangelis about this but he is traveling right now - we'll look at it, but I do want you all to know that not a single NG pilot on our tech team thought this was an issue during testing.

Thanks Ryan. I think it's the information in the manuals that's foxed people, where it clearly states a two degree pitch up attitude on approach. We all see zero. Not a huge difference, but a difference all the same. Martin Wilby

Thank you Ryan. We do appreciate your input. Regards,jen noulet

Hi there, I did experience floating (according to me, cause of a too high Vref selected by the FMC) mostly with a heavy load. On lighter planes, with a smaller Vref, I usually touchdown 'normally'. So I usually change speed on the MCP to Vref -5 and it works fine. But then I only got like 30-40 hours on the plane so there might be something I missed. I looked into the documentation, read the tutorial again a couple of times since it didn't happen on that flight, but couldn't find what I was doing wrong. Regards,

Thanks Ryan. I think it's the information in the manuals that's foxed people, where it clearly states a two degree pitch up attitude on approach. We all see zero. Not a huge difference, but a difference all the same. Martin Wilby

I see it too but we have other data that came from Boeing that contradicts it (and it's what was used in making the flight model)... As I said we'll look into it, one of our tech team guys already volunteered to pay close attention to this on his next trip. The data we have says no more than 1 degree by the way and most of the time between 0 and 0.5. This is based on real data, we wouldn't just make something like approach pitch attitude up. One of these two documents is wrong, we'll just have to figure out which.

I see it too but we have other data that came from Boeing that contradicts it (and it's what was used in making the flight model)... As I said we'll look into it, one of our tech team guys already volunteered to pay close attention to this on his next trip. The data we have says no more than 1 degree by the way and most of the time between 0 and 0.5. This is based on real data, we wouldn't just make something like approach pitch attitude up. One of these two documents is wrong, we'll just have to figure out which.

Thank you Ryan for your comments! It is nice to know that PMDG is aware of our concerns.I have fully confidence that this will be sorted out the correct way. @ Tony: "Just trust me" huh? ;-)

Hi Ryan,Is it the unreliable airspeed chart? I know that chart says the same thing but it has a safety margin built into the approach section. On that chart it says vref+10 in the approach section, which would give you that attitude at that speed. With unreliable airspeed it's better to carry the extra speed. The section 6 attitudes are based on vref+5 app and vref at touchdown. But if you are not talking about that chart, please disregard this post.

Nah, don't trust me... I don't know anything about aviation or the 737, or the MU-2, or the King Air, or the Citation II ... Going to mail in my certificate and medical I'm so ashamed I post such nonsense.. How bout a big group hug??