Hello,how can I make an intersection takeoff (I even don't know if that phraseology is correct) with the MD-11?Normally I enter and compute my whole trim and VSpeeds with TOPCAT which leads to a takeoff-run over the whole length of the runway.If I'd like to make now a shortened take off from an intersection (e.g 25/E or whatever) where can I enter the reduced runway length or the intersection where I enter the runway? How can this be done (if?) in the MD-11?many thanks,Günter

This really has less to do with the MD-11 and more to do with TOPCAT, but since I use TOPCAT, I'll see if I can help.When you go to the Takeoff/Departure tab in TOPCAT, you will see an area that allows you to select the runway. In that drop down list, you should see the available runways, in addition to the available intersection departure points for those runways.If you look here, you can see an example:TOPCAT Takeoff TabIn the picture, you can see the airport is EDDF and immediately below, shows a Runway 25 right at Foxtrot departure. So, when you're looking to calculate an intersection departure, use the drop down list and select the one that is [Runway you want]/[intersection you want].Of course, it wouldn't be me if I didn't post some reference to the manual in which you can educate yourself further on the matter, so here:TOPCAT Users GuideThe relevant pages begin at 49, and your questions is addressed on page 50.

Thanks Kyle for the reply,I recognised that in TOPCAT too.That was why I asked myself how to enter now the reduced takeoff into the MD11s FMC or what to do...?Selecting it in TOPCAT is one thing, but what do I have to do now in the "Cockpit"?

Nothing.EDIT:Sorry. Didn't mean to come off short, but I was eating when I typed that, so I was typing one-handed. There's absolutely nothing you do in the systems other than enter the V-speeds, set Packs ON/OFF, and any other normal setting on the TO page. The MD-11 assumes you're taking off on a runway and it could care less about the length. The fact that the runway's essentially now shorter than normal isn't of any consequence to it. TOPCAT (your dispatcher) verifies that you will (or won't) be able to takeoff on that runway (at that intersection, if applicable), you may double check the numbers using the relevant tables/charts, and go on assuming it's a normal takeoff. The only differences between full-length and intersection may be laid out in company SOP. The takeoff brief would likely include that it is a standard/non-standard intersection takeoff (some int takeoffs are standard: EWR's 22R/W for example), and the controller will modify the takeoff clearance slightly ("FDX237 heavy, wind 240 at 11, runway 22R at whiskey, cleared for takeoff"), but that's it.

Hi GünterI would guess that the MD11 would in general use the whole runway. I can't remember ever seeing an MD11 in EDDF leave from the intersections of either 07/25L/R or 18... weight limiting as a factor no doubt...Andrew

Hi GünterI would guess that the MD11 would in general use the whole runway. I can't remember ever seeing an MD11 in EDDF leave from the intersections of either 07/25L/R or 18... weight limiting as a factor no doubt...Andrew

On the Airbus you must enter the reduced distance for GPS calculation, are you sure it's not the same in the MD11? I will have a hunt through the documents.No reason to not use an intersection if the aircraft is light enough and the airports busy.

Agreed, though I am always close to MTOW for the given runway lengths (using a handy excel table FLEX calculator that I found on avsim). I believe in the fact that an empty aircraft flying is a loss of revenue...:)Of course, you are right Rob... I just never saw an MD11 leave Frankfurt from an intersection... that's all, not going to imply that that is never the case... sorry for any confusion...Your knowledge of this aircraft has been a great source of help for me so far, thanks for this!Andrew

On the Airbus you must enter the reduced distance for GPS calculation, are you sure it's not the same in the MD11? I will have a hunt through the documents.

Sure about that? I'm not an airbus expert, but on Boeing aircraft, the reduced length is only required on planes without GPS. The FMC will then do a runway update when takeoff thrust is set.For the original poster, this entry doesn't affect the takeoff data, but rather it's for navigation purposes.

Sure about that? I'm not an airbus expert, but on Boeing aircraft, the reduced length is only required on planes without GPS. The FMC will then do a runway update when takeoff thrust is set.For the original poster, this entry doesn't affect the takeoff data, but rather it's for navigation purposes.

Hi,Just dug out my FCOM and your correct, if the Aircraft is in GPS Primary then no need to enter the TO SHIFT So it only applies to the older A320. PMDG simulates a non GPS eqiuped aircraft in the options menu, has anyone selected that option?

Many thanks to all foru your replies...So as a conclusion: theres nothing to do in the FMC beside entering possible different V-Speeds?many thanks!

So it only applies to the older A320. PMDG simulates a non GPS eqiuped aircraft in the options menu, has anyone selected that option?

I don't use the GPS on my MD11.Paul