Sponsor Message:
Aviation Hobby Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Flight Simulator (744) Problems  
User currently offlineAg92 From India, joined Jul 2006, 1317 posts, RR: 0
Posted (6 years 3 weeks 6 days 6 hours ago) and read 6931 times:

Hi guys,

I need some help over here, whenever I fly a 744 on FSX, around 30mins into it, the speed drops to zero and a virtual freefall happens. Whenever this happens it is on autopilot and i take it off immediately once it starts, and I try and turn off and on the engines again. It always starts to ascend for 5 seconds than once again starts its freefall.

Does anyone know what the problem is?

Thanks in advance

14 replies: All unread, jump to last
 
User currently offline9VSIO From United Kingdom, joined Dec 2006, 693 posts, RR: 2
Reply 1, posted (6 years 3 weeks 5 days 18 hours ago) and read 6890 times:
Support Airliners.net - become a First Class Member!

Does this happen in all conditions? Are you flying S&L or climbing?


Me: (Lining up on final) I shall now select an aiming point. || Instructor: Well, I hope it's the runway...
User currently offlineAcroAirFun From Switzerland, joined Feb 2007, 106 posts, RR: 0
Reply 2, posted (6 years 3 weeks 5 days 16 hours ago) and read 6885 times:

Well... I use FSX now, but when I used FS2002 about 5 years ago I had the same problem with default Boeing 777-300. I think Microsoft couldn't fix any problem since first FSs.  Angry  Big grin


Everything is flexible if you know how to bend it.
User currently offlineKimberlyrj From United Kingdom, joined Mar 2008, 385 posts, RR: 1
Reply 3, posted (6 years 3 weeks 5 days 8 hours ago) and read 6857 times:

Hey

Could it be an icing problem? Ensure you have all the heating equipment on that you need!?

Is it the basic Boeing 747? or PMDG's version?

Kimberly.


User currently offlineAg92 From India, joined Jul 2006, 1317 posts, RR: 0
Reply 4, posted (6 years 3 weeks 5 days 7 hours ago) and read 6856 times:



Quoting 9VSIO (Reply 1):
S&L or climbing?

Sorry didn't get you on what you mean

Quoting Kimberlyrj (Reply 3):
Could it be an icing problem? Ensure you have all the heating equipment on that you need!?

Should there be an icing problem associated with Singapore's hot and tropical climate?

Quoting Kimberlyrj (Reply 3):
Is it the basic Boeing 747? or PMDG's version?

No add-ons yet for me

Quoting 9VSIO (Reply 1):
Does this happen in all conditions

This reminded me, everytime I have flown a Boeing 747 is with the static weather update. I am now going to try it with the standard weather and then tell you the results


User currently offlineGCDEG From Greece, joined Jan 2006, 352 posts, RR: 4
Reply 5, posted (6 years 3 weeks 5 days 2 hours ago) and read 6842 times:



Quoting Ag92 (Reply 4):
Quoting 9VSIO (Reply 1):
S&L or climbing?

Sorry didn't get you on what you mean

Straight and level flight or climbing.

Quoting Ag92 (Reply 4):
Could it be an icing problem? Ensure you have all the heating equipment on that you need!?

Should there be an icing problem associated with Singapore's hot and tropical climate?

I would think so at 35,000ft  Wink Make sure you have the anti ice, pitot heat etc when you need to.

Quoting Ag92 (Reply 4):
No add-ons yet for me

Two words - get some! It will add such a new dimension to your FS.

Quoting Ag92 (Reply 4):
This reminded me, everytime I have flown a Boeing 747 is with the static weather update. I am now going to try it with the standard weather and then tell you the results

Try it with just clear weather ie no clouds winds etc and see what happens.

GCDEG



The best thing invented - Winglets!
User currently offline9VSIO From United Kingdom, joined Dec 2006, 693 posts, RR: 2
Reply 6, posted (6 years 3 weeks 4 days 22 hours ago) and read 6825 times:
Support Airliners.net - become a First Class Member!

Does the stall warner go off? Or does the speed just plummet. Most times, I think people set their climb on a fixed V/S and the a/c is unable to maintain such a rate at full weights, so the poor thing just stalls.


Me: (Lining up on final) I shall now select an aiming point. || Instructor: Well, I hope it's the runway...
User currently offlineAg92 From India, joined Jul 2006, 1317 posts, RR: 0
Reply 7, posted (6 years 3 weeks 7 hours ago) and read 6770 times:



Quoting 9VSIO (Reply 6):
Does the stall warner go off?

I think it does

But anyways thanks alot for your help guys, when I put it on clear skies everything is ok.

Quoting 9VSIO (Reply 6):
I think people set their climb on a fixed V/S

I don't know much about this but I never go above 2500 on a 744. Most of the times its at 1800


User currently offlineDavid L From United Kingdom, joined May 1999, 9483 posts, RR: 42
Reply 8, posted (6 years 3 weeks 6 hours ago) and read 6757 times:



Quoting 9VSIO (Reply 6):
Most times, I think people set their climb on a fixed V/S and the a/c is unable to maintain such a rate at full weights, so the poor thing just stalls

 checkmark 

Quoting Ag92 (Reply 7):
I don't know much about this but I never go above 2500 on a 744. Most of the times its at 1800

Seems like quite a lot at altitude. Safest way is to climb in airspeed/Mach mode to the target altitude and let the V/S sort itself out. As you near your cruising flight level, you might only be able to climb at a few hundred feet per minute.


User currently offlineEbs757 From United States of America, joined Jul 2006, 758 posts, RR: 0
Reply 9, posted (6 years 2 weeks 6 days 22 hours ago) and read 6739 times:



Quoting Ag92 (Reply 7):
don't know much about this but I never go above 2500 on a 744. Most of the times its at 1800

2500 FPM is a lot for a 747 at FL300



Viva la Vida
User currently offlineLUPOR1D From Ireland, joined Feb 2008, 316 posts, RR: 0
Reply 10, posted (6 years 2 weeks 6 days 8 hours ago) and read 6715 times:

Make sure the pitot heat is turned on before you even take off.

Also use the level change function if the a/p has it



Always lurking.
User currently offlineAg92 From India, joined Jul 2006, 1317 posts, RR: 0
Reply 11, posted (6 years 2 weeks 6 days 6 hours ago) and read 6707 times:



Quoting David L (Reply 8):
Seems like quite a lot at altitude



Quoting Ebs757 (Reply 9):
2500 FPM is a lot for a 747 at FL300

Ok guys, thanks alot again. I always thought that the average would be somewhere near 3000 considering how long it takes to reach cruising altitude!

Quoting LUPOR1D (Reply 10):
Make sure the pitot heat is turned on before you even take off.
Also use the level change function if the a/p has it

All right, now what is the heat you are talking about and the level change function? I apologize for my limited knowledge of FSX


User currently offlineDavid L From United Kingdom, joined May 1999, 9483 posts, RR: 42
Reply 12, posted (6 years 2 weeks 6 days 4 hours ago) and read 6702 times:

Using V/S mode is fine when you know what you're doing. That's why I never use it.  Smile

Quoting Ag92 (Reply 11):
All right, now what is the heat you are talking about and the level change function?

You might find the Pitot Heat in the default version of most aircraft but I don't think there's such a switch on the real 744, or on the PMDG version. There's Wing Anti-ice and Nacelle Anti-ice on the real aircraft, with switches on the overhead panel.

The Flight Level Change mode is a Boeing autopilot mode. If it's not available on the default version, I'd forget about it. It's been a while since I looked at the default aircrfat.  Smile


User currently offline9VSIO From United Kingdom, joined Dec 2006, 693 posts, RR: 2
Reply 13, posted (6 years 2 weeks 4 days 18 hours ago) and read 6663 times:
Support Airliners.net - become a First Class Member!



Quoting David L (Reply 12):

The Flight Level Change mode is a Boeing autopilot mode. If it's not available on the default version, I'd forget about it. It's been a while since I looked at the default aircrfat

FL change is not avail on default 747. I always manually monitor and adjust the climbs and descents lest my speed goes a bit haywire...

Quoting Ag92 (Reply 11):
All right, now what is the heat you are talking about

I believe the default 747 has it labeled "anti-ice", but it must serve as a pitot heat as well. Make sure that is on.



Me: (Lining up on final) I shall now select an aiming point. || Instructor: Well, I hope it's the runway...
User currently offlineDavid L From United Kingdom, joined May 1999, 9483 posts, RR: 42
Reply 14, posted (6 years 2 weeks 4 days 12 hours ago) and read 6648 times:



Quoting 9VSIO (Reply 13):
I always manually monitor and adjust the climbs and descents lest my speed goes a bit haywire...

That's good as long as you understand how climb performance deteriorates with altitude.

Incidentally, here's a good discussion about V/S in real operations:

V/S Autopilot (by Ballkn Feb 23 2008 in Tech Ops)

You'll have to sort the wheat from the chaff but it should be obvious.  duck 


Top Of Page
Forum Index

Reply To This Topic Flight Simulator (744) Problems
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Aviation hobby related posts only.
  • Back all your opinions with facts.
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
TPA Flight Simulator! posted Sun Feb 17 2008 21:32:53 by DL763
Flight Simulator posted Fri Nov 30 2007 02:54:57 by Longitude
Kiah Ahd Eddf In Flight Simulator posted Tue Jun 19 2007 07:49:21 by LAXspotter
Flight Simulator Memory Question? posted Fri Jun 15 2007 08:35:32 by FlyMIA
Flight Simulator XI? posted Sat May 12 2007 19:07:17 by AcroAirFun
Microsoft Flight SImulator X posted Thu May 10 2007 02:11:02 by Palladium
Microsoft Flight Simulator For Xbox posted Tue Apr 17 2007 21:07:58 by Detroitflyer
Flight SImulator X Laptop Requirements posted Wed Mar 21 2007 04:20:18 by Aviator1990
Flight Simulator Runway Use posted Sun Feb 25 2007 23:06:32 by LAXspotter
Flight Simulator X posted Sat Feb 10 2007 19:05:24 by CAMB737
Flight Simulator XI Question. posted Thu Aug 27 2009 08:59:03 by Joperrin89

Sponsor Message:
Printer friendly format