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fushi

MD-11 speed restriction on the climb

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Captains,MD-11 FMS hasn't speed restriction setting page like ACT 250KT CLM page of 747-400 FMS.Is it only an omission?Sincerely,Kan-ichiro Fushihara

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Captains,MD-11 FMS hasn't speed restriction setting page like ACT 250KT CLM page of 747-400 FMS.Kan-ichiro Fushihara
Hi Kan-ichiro, I am not sure if I understand your issue?For example: click on any point of the programmed SID on the right side keys on the MCDU ( Vertical Revision), there you will see the speed restriction like 250/10000.Does this answer your question?RGDSTOM

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Hi,I have known there is no problem in the Tutorial 1 SID as an example.Please look at the FMS of Boeings, Airbususes and others.Sincerely,Kan-ichiro Fushihara

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Tom answered you, the speed restriction for < 10,000 can be changed on the VERT REV page... you are right, there is not a VNAV page like the Boeing but you can accomplish the same things.

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Hi,I have known there is no problem in the Tutorial 1 SID as an example.Please look at the FMS of Boeings, Airbususes and others.Sincerely,Kan-ichiro Fushihara
Kan-ichiro, good to see you on the MD11!If you open the FMS manual and go to page FMS.30.5 there is a picture of the Vertical Revision (Vert Rev) page there, you can see the Climb Speed Limit by the line select key 5R.TO change the speed limit below 10000, open your F-PLN page, click on the speed/alt constraint by the first waypoint and you'll get this screen, from there you can enter your desired speed. I usually use 350/10000 if I've been given no speed restriction on the climb.Hope this helps!

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Dear, Mark,Thank you for your kind instructions. The PMDG MD-11 (to fly Douglasway) is great!Although I have been able to set the speed restriction at the specified waypoint, I would like to set the speed restriction generally under 250KT below Alt 10,000ft as same as Boeings or Airbuses.Sincerely,Kan-ichiro Fushihra

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Hi Fushi,As Mark stated it's on the Vert Rev page on the right hand side 'CLB SPD LIM'. You can choose any waypoint before the T/C including the Departure airport. Waypoints chosen after T/C will allow you to enter restrictions for the descent 'DES SPD LIM'. This is exactly the same as boeing but located differently.Nathan

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Hi Nathan,I have assumed the setting like 'CLB Page' on the FMC USER'S MANUAL (12-43) of PMDG 747-400X.Sincerely,Kan-ichiro Fushihara

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Sorry, the MD-11 simulates the MD-11. The 747X is a different airplane.

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Hi, I don't know whether or not it is a Douglas way. I have been reluctantly using AFS of the FCP (SPD 250KT and ALT 10000FT) without the FMS (FMS SPD and PROF) on the non-SID departure of MD-11. Sincerely,Kan-ichiro Fushihara

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Hi, I don't know whether or not it is a Douglas way. I have been reluctantly using AFS of the FCP (SPD 250KT and ALT 10000FT) without the FMS (FMS SPD and PROF) on the non-SID departure of MD-11. Sincerely,Kan-ichiro Fushihara
Hi Kan-ichiro, it seems like we don't quite have your issue sorted here so I'll try again. I admit that during testing it took me a while to find it too!So:Step 1: Enter your flight plan, complete all the performance init data.Step 2: Click on F-PLN and up comes this screenStep 3: Click on the speed/altitude constraint for one of your waypoints (ie in this case say key '2R') and the following screen appearsType in the desired speed below 10,000 (ie anything up to '350' is fine) then press key 5R, the display will change from '250/10000' to whatever speed you entered.Now, in PROF you should accelerate all the way to your desired climb speed once you've cleaned up.Remember if you're flying on VATSIM to ONLY do this with clearance, the controller is expecting you at 250 knots below 10,000 feet so they'll want to know about this in advance. Of course, if you're offline, then you're the boss!Fellow MD11ers, if I've got anything wrong here please step in.

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Hi Mark,Thank you for your kind instructions.However, how do you set the initial climb speed restriction of 250KT/10000ft in the following case?MCDU.jpgSincerely,Kan-ichiro Fushihara

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Hi Mark,Thank you for your kind instructions.However, how do you set the initial climb speed restriction of 250KT/10000ft in the following case?MCDU.jpgSincerely,Kan-ichiro Fushihara
You did not enter a Runway, did u do that on purpose?But anyway, you can just click on LSK 1R (the first/ tomost key on the right side, next to the number 119) and overwrite the speed like this: "250/10000". Thats all :( Is is working?TOM

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Hi Mark,Thank you for your kind instructions.However, how do you set the initial climb speed restriction of 250KT/10000ft in the following case?MCDU.jpgSincerely,Kan-ichiro Fushihara
Hmm, well you're missing a SID there, but I think it should still work if you click the key next to PANC's altitude (where it says '119').If not, then it may be a case of adding a SID first. Hope that helps.

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I have been able to set the speed restriction once, as below:MCDU2.jpgHowever, it has been unable to save the 250/10000, rather it comes back to VCL/10000 afterward.Although FMS Operating Manual describes "The limit may be found on any climb waypoint VERT REV page and may be cleared by use of the CLR key or altered by pilot entry into data field 5R." on FMS.30.7 page, it cannnot be cleared, either.Aren't these caused by a bug?Sincerely,Kan-ichiro Fushihara

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Hi FushiI see 250/10000 restriction. What do you mean by it is unable to save 250/10000? Maybe provide some pictures of VERT REV page also a pic of TO/APP page (while on ground) so i can follow what you are trying to do.Nathan

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Hi Nathan,The 250K/10000 restriction is a general setting.Isn't it very inconvenient to have to set it each time?Sincerely,Kan-ichiro Fushihara

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I don't have anything to add, but I am curious. Where is there not a speed restriction below 10,000? Just curious.

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Hi Nathan,The 250K/10000 restriction is a general setting.Isn't it very inconvenient to have to set it each time?Sincerely,Kan-ichiro Fushihara
Okay, now i understand. Yes 250/10000 is normal, and yes VERT REV page will show VCL/10000 as default. But considering you are pretty heavy i would go with VCL speed as that would give you the best climb for your weight even though you will bust through the 250/10000 restriction.Real world, i don't know if pilots must maintain 250/10000 or can actually request higher speeds.Nathan

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Okay, now i understand. Yes 250/10000 is normal, and yes VERT REV page will show VCL/10000 as default. But considering you are pretty heavy i would go with VCL speed as that would give you the best climb for your weight even though you will bust through the 250/10000 restriction.Real world, i don't know if pilots must maintain 250/10000 or can actually request higher speeds.Nathan
I understood well. Yes, I'm pretty heavy in this case:ZFW = 178,115kgFuel = 85 metric tonnesVCL = 274KTI will request higher speeds from now on.Sincerely,Kan-ichiro Fushihara

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Okay, now i understand. Yes 250/10000 is normal, and yes VERT REV page will show VCL/10000 as default. But considering you are pretty heavy i would go with VCL speed as that would give you the best climb for your weight even though you will bust through the 250/10000 restriction.Real world, i don't know if pilots must maintain 250/10000 or can actually request higher speeds.Nathan
That is the breakthrough in this thread, I hopeBatting%20Eyelashes.gif Usually it is not a problem to fly faster than 250 below 10000ft, if you have a higher Vcl. In some countries you have to advice/ request that higher speed, in most countries the regulation for the max speed below 10000ft is: 250kts or minimum clean speed (VCL in that case).So: dont worry about that 250/10000ft restriction, in the real world, there is no problem with that.Have a nice Landing,TOM

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I find this all a little bizarre, as I have never had to set the 250 below FL100 restriction manually... It is always in there...Even when I switch to managed speed, the aircraft increases pitch to hold climb speed at 250 below FL100, and then pitches down to accelerate to FMS managed speed of around 340/M082 or so...OK, so I only have 70 hours in the MD11, but as I fly nothing further than 4 hours, with most trips under 2 hours currently, I have had quite a few takeoffs already for those 70 hours in the seat...May I assume this only becomes an issue at the much higher takeoff weights, that I have not experienced so far? (IE a Vcl greater than 250kts IAS)Andrew

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May I assume this only becomes an issue at the much higher takeoff weights, that I have not experienced so far? (IE a Vcl greater than 250kts IAS)Andrew
That is correct Andrew. As far as I know (I checked my documents to confirm that), at weights >204 tons the VCL starts to get bigger than 250kts. I have just tried this in the sim, where it seems to change at weights > than max LDGW (222,9 for freighters). The VCL is 1,5g times the stickshaker speed. Can somebody confirm that from the real one quickly:-)?TOM

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That is correct Andrew. As far as I know (I checked my documents to confirm that), at weights >204 tons the VCL starts to get bigger than 250kts. I have just tried this in the sim, where it seems to change at weights > than max LDGW (222,9 for freighters). The VCL is 1,5g times the stickshaker speed. Can somebody confirm that from the real one quickly:-)?TOM
For a GW of 220 tons, Vcl equals 250 IAS.Regards,Harry

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