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jahn

PMDG 737 on P3D v4.4: AC is gears up upon scenario reset

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Hi everyone,

Right off the bat, Merry Christmas and a Happy New Year 2019

I've recently installed P3D v 4.4 and then the PMDG 737 NG. I am amazed by this simulation!!

However right at the start I've noticed an issue which is somewhat annoying:

I've noticed that whenever I reset the scenario I was in the aircraft would be re-positioned gears up and would crash into the ground, the sim then automatically proceeds to re-load and the same thing happens again...ad infinitum.

The only way to get out of this cycle, is to exit P3D and re-launch it.

I even tried creating a new scenario with the PMDG 737 as the 'vehicle'.

Again when you choose the PMDG as a vehicle the first time after P3D start-up or load a secnario with the PMDG 737 as a vehicle, everything is OK.

Eventually as you are trying things out in the aircraft you reach a point where you'd like to start anew and proceed to reset the scenario.....the aircrafts ends up positioned gears-up and crashes on the spot ( presumably what would happen if the gears could actually be retracted on the ground ).

This happens every time once Reset, Load or Resume are attempted after the first system initialization right after P3D startup and loading of the PMDG 737.

So first time load of PMDG 737  after P3D start-up the gears are down and everything works as advertised ( at least the parts I have been able to explore so far ) BUT after that when you need to reset any scenario containing the 737 PMDG it ends up gears up and crashes into the tarmac.

Regards

Jahn

 

P.S.: I'd like to offer my respects and compliments to the folks at PMDG. I've flown planes for real ( was an FO on a turboprop ) and I have been an engineer in the aerospace industry. I have also flown both the 737-400 and 737-800 full motion sims a few times. Always phantasized owning a full-motion 737 sim. The PMDG comes very close to realizing my pipe-dream. The detail and the realism is breath-taking. Thank you for making this happen!

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You cannot and must not simply reset the scenario when any PMDG aircraft is already loaded. That has the effect of loading the aircraft on top of itself, which is a guaranteed way to cause the sim to become unstable. It’s not only PMDG aircraft that have this problem. Almost any complex add-on that uses custom non-SDK code for its core functionality will cause major issues if you try to reload the same aircraft in-game.

For a similar reason, you should not use  a PMDG aircraft as the default flight.

At the very least, if you want to reload a PMDG aircraft, you should first load a default aircraft as an intermediate step, (such as the FSX Trike or P3D Cub), then load the PMDG model.

But for best results, it is probably best to exit the sim completely, and restart it.


Jim Barrett

Licensed Airframe & Powerplant Mechanic, Avionics, Electrical & Air Data Systems Specialist. Qualified on: Falcon 900, CRJ-200, Dornier 328-100, Hawker 850XP and 1000, Lear 35, 45, 55 and 60, Gulfstream IV and 550, Embraer 135, Beech Premiere and 400A, MD-80.

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Hey Jim,

thanks for your tip.

I tried re-loading the PMDG via the intermediate step of loading a default P3D aircraft first, then loading the PMDG 737.

Same result, the aircraft ends up gears up and crashes to the ground.

Seems that after launching P3D, you can only ever load the PMDG once, after that you would be `loading the aircraft on top itself` as you mentioned.

Kind Regards

Jahn Drink  

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1 hour ago, jahn said:

Seems that after launching P3D, you can only ever load the PMDG once, after that you would be `loading the aircraft on top itself` as you mentioned.

Correct. This is explained a little further in the Intro Manual, which is something I'd definitely recommend reading.

<sim location>\PMDG\<aircraft>\Flight Manuals


Kyle Rodgers

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All those advices are correct but one additional advice is: in the General Setting - Realism Setting you find at the r/h side "Crashes and Damages put a checkmark at ïgnore crashes and damages and uncheck "Detect crashes and damages.
In this case you avoid a start and restart loop of P3V4.
Succes

Jo va Bra

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Mmm don’t seem to have that problem i can load and reload default planes and PMDG planes left right and centre including 737 and no problems.

Regards.


Zdenek  Cebis

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6 minutes ago, Ausflight said:

Mmm don’t seem to have that problem i can load and reload default planes and PMDG planes left right and centre including 737 and no problems.

Then you're getting lucky. The sim really doesn't like it, in general.


Kyle Rodgers

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2 hours ago, scandinavian13 said:

Then you're getting lucky. The sim really doesn't like it, in general.

That’s correct normally i start with default plane and then change.If you do change too many times PMDG does give you a warning prompt.

Regards


Zdenek  Cebis

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1 hour ago, Ausflight said:

That’s correct normally i start with default plane and then change.If you do change too many times PMDG does give you a warning prompt.

Regards

you will almost certainly have issues... maybe not those that are as obvios as the OP's issues but in the background there might be an issue that can easily screw up your flight. From flaps problems, speed issues, flight model issues up to CTDs. I've read everything of that here from people who reloaded flights or set PMDG aircraft as their default flights. When I tried it with the 737 out of couriosity I was absolutely unable to slow her down during decent, even with spoilers and Flaps 10. No chance. Dropping the gear brought her back from 210kts to 140kts within seconds. Just avoid it or - if you encounter problems - change this first.


,

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43 minutes ago, Ephedrin said:

you will almost certainly have issues... maybe not those that are as obvios as the OP's issues but in the background there might be an issue that can easily screw up your flight. From flaps problems, speed issues, flight model issues up to CTDs. I've read everything of that here from people who reloaded flights or set PMDG aircraft as their default flights. When I tried it with the 737 out of couriosity I was absolutely unable to slow her down during decent, even with spoilers and Flaps 10. No chance. Dropping the gear brought her back from 210kts to 140kts within seconds. Just avoid it or - if you encounter problems - change this first.

I don’t make a habit in changing planes and i know eventually it would cause me problems.I was just saying that it never happened to me that’s all and i know if i persist in doing so i eventually would ran out of luck and boom.

Regards

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Zdenek  Cebis

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Hi everyone,

thanks for your replies and contributions.

                                       So you can't reload the plane in any one session of the P3D sim

                                                                                     ...accepted.

Here is a related issue/concern and since I am new to P3D and PMDG I might as well raise it here:

Background & motivation of my concern: To me the PMDG 737 is more of a learning experience ( at least for now ). So I would want to use the sim to try out things and different situations. Obviously one will make mistakes, screw things up and so on....so you would want to start all over again and repeat a certain procedure, operation or maneuver.That would be one use of simulator like the PMDG ( IMHO ).

Use case: Now lets say I'm at a certain altitude and a certain course and I want to try out x, y or z. Now I hope I won't have to take off and fly the airplane into that exact situation/state before being able to try something out....

Question: Can I start P3D, load the PMDG 737, position my aircraft at the desired speed, altitude and heading or place the aircraft in the desired situation or spot and save this as a situation/scenario??

From what I've gathered, if I screw something up in in the scenario I've saved/created I won't be able to reset or reload the same scenario since I would be loading another instance of PMDG 737 on top of the previous one ( in memory ..I presume? ).

HOWEVER is it OK to exit the sim  __after__   saving the situation / scenario, then re-starting P3D and loading the saved situation from a sceanrio???

Summary:  Can I create, then save certain training scenarios/situations with the PMDG 737 and load them up repeatedly ( each time taking care leaving the sim and re-starting it of course )? I.e. recreate the same situation, state and conditions over and voer again for training?

 

Thank You

Jahn Drink

 

 

                                                                    

 

 

 

 

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46 minutes ago, jahn said:

Hi everyone,

thanks for your replies and contributions.

                                       So you can't reload the plane in any one session of the P3D sim

                                                                                     ...accepted.

Here is a related issue/concern and since I am new to P3D and PMDG I might as well raise it here:

Background & motivation of my concern: To me the PMDG 737 is more of a learning experience ( at least for now ). So I would want to use the sim to try out things and different situations. Obviously one will make mistakes, screw things up and so on....so you would want to start all over again and repeat a certain procedure, operation or maneuver.That would be one use of simulator like the PMDG ( IMHO ).

Use case: Now lets say I'm at a certain altitude and a certain course and I want to try out x, y or z. Now I hope I won't have to take off and fly the airplane into that exact situation/state before being able to try something out....

Question: Can I start P3D, load the PMDG 737, position my aircraft at the desired speed, altitude and heading or place the aircraft in the desired situation or spot and save this as a situation/scenario??

From what I've gathered, if I screw something up in in the scenario I've saved/created I won't be able to reset or reload the same scenario since I would be loading another instance of PMDG 737 on top of the previous one ( in memory ..I presume? ).

HOWEVER is it OK to exit the sim  __after__   saving the situation / scenario, then re-starting P3D and loading the saved situation from a sceanrio???

Summary:  Can I create, then save certain training scenarios/situations with the PMDG 737 and load them up repeatedly ( each time taking care leaving the sim and re-starting it of course )? I.e. recreate the same situation, state and conditions over and voer again for training?

 

Thank You

Jahn Drink

 

 

                                                                    

 

 

 

 

From the moment you exit the sim and load the new scenario from the load option when starting P3D yes you can do what you describe


Chris Makris

PLEASE NOTE PMDG HAS DEPARTED AVSIM

You can find us at http://forum.pmdg.com

 

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But keep in mind that the airplane runs through its 20 second initialization. in this time it can't be paused and so it will fly. As a result you shouldn't save the flight on final or shortly before a turn or T/D as you can't do anything but wait until it is done. 


,

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You can't pause, but you can, however, enter Slew mode ('Y') while the initialization runs and return to normal simulation once the scenario is loaded and the initialization is complete.If you can save with the autopilot disengaged (or turn it off momentarily while in slew), you can avoid the sudden jarring action that results when the automated flight systems take abrupt control of the aircraft on resume; it's best if the simulation can be primed with a few cycles of unautomated flight before reactivating AP.

As for resetting/reloading, I have not found any reliable solution that doesn't involve restarting the simulation. The earlier suggestion about turning off crash detection is a winner. Nothing is more annoying than completing a four-hour flight, only to roll over some errant taxiway "bump" in the scenery and have the entire aircraft collapse to the ground from gear overstress. Even when I think I've gotten away with it, some flight system invariably ends up fux0red. I wish it were otherwise, but this is just the way things roll in this (or any PMDG) bird. I'm sure if it were trivial to address, PMDG would have resolved it many moons ago.

 

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I’m even in the habit of restarting the computer if i want to use it again  caus even if you shut down the sim and restart in the same go it’s still in the memory.I don’t do this always however.

Regards

Edited by Ausflight

Zdenek  Cebis

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