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Ricardo41

Flying out of Heathrow

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We have a friend that says "You think flying out of Toronto is busy, you should try Heathrow. You think everything has stopped it's so busy." Well I tried flying out of Heathrow today in my C310. I had traffic at 100%. Man, was it nuts.JimCYWG

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Lol. I just bought Gary Summons' Heathrow scenery - it's not that great: lousy framerates and blurry photorealistic ground textures, but, then again, I have everything set to Maximum. With 100% ai traffic, you could be sitting on the taxiway for a long time, watching FS9 ATC get all confused when there are more than 3 planes taxiing around. What I usually do, after admiring all the nice ai traffic, is to clear everything out by forwarding time by 5 minutes. This means I get to actually depart while I'm still young.ricardo

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Once, I was trying to fly out of there in the Captainsim 727, and it honestly took nearly forever just to get across the active runway to finish taxiing for takeoff....Was a good thing I had a lot of fuel onboard.... :(

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Did you have enough to get to Gatwick?:DXP Home SP2Asus P4P800-SE Intel 3.0GHZDDR 400 D/C 4x512MBLeadtek 6800GT 256MB (77.72)SB AudigyCH Products Yoke/Pedals USBSee you in the fence...CYYZ

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Yes, also in real life Heathrow uses one runway for landings and the other for take-offs, which certainly makes take-offs quicker!The exception seems to be first thing in morning & last thing at night when noise abatement is better served by having the smaller number of take-offs shared across both runways.You can use Afcad to set one runway in each direction for landings & the other for take-offs.Also, you can use Ken Salter's FS9 Configurator (available in the library I should think) to increase AI traffic's taxi speed - this is especially useful for getting arrivals to clear the runway quickly.

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Apart from speeding up the AI as described above, you can also use AISmooth to prevent go arounds and create holding patterns. As for holding to cross an active, I recommend ignoring ATC and using your best judgment to cross when there is a sufficient gap in the traffic. The ATC engine is set up to have you hold as long as there is an aircraft that has been cleared to land but has not yet switched to ground control. If there are several aircraft on approach that means holding until the last one has switched to ground, which can take forever. If there is a sufficient gap between landing aircraft, just taxi on. ATC will tell you to resume taxi as soon as you have crossed the runway centreline anyway. You can also skip a queue holding for takeoff by using a different entry than the rest of the traffic. You will still get the prompt to request takeoff clearance.

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everytime I try using AI Smooth, it seems to be confused because I have so much traffic and planes just disappear or stay in holding patters forever

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When I run low on patience, I just bump up the acceleration to 8x for a second. Then I just slide right in to the front of the line :)

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>everytime I try using AI Smooth, it seems to be confused>because I have so much traffic and planes just disappear or>stay in holding patters foreverI find AISeperation works much better for me.

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In the air at LHR it is not much better. I recall that almost every flight I have taken from New York to LHR (over 20 total) has resulted in some hold time the next morning, 10 to 15 minutes at least as we circle down the stack.Only if I am on a flight that is getting in very early might we miss the hold.Overall (number of flights and passengers), LHR is the world's 4th busiest airport (ATL, ORD and LAX are #'s 1-3 respectively). However, LHR is #1 when it comes to international passengers served.Not even in league with JFK, which ranks #20 overall and #7 with international traffic.Regards,http://www.dreamfleet2000.com/gfx/images/F...R_FORUM_LOU.jpg

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I must admit, I am also guilty of "fast forwarding" the clock by 1 minute to clear the queue. This is however a better option than my other bad habit - cutting up the grass. :-) Heathrow Ground doesn't like me very much....

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You don't even need to "fast forward" the clock..... Pause the sim first, then increase the sim to 8X and back to 1X.... AI will still reset itself in the process, and once unpaused, zero time will have "mysteriously disappeared".. :(The only time I ever do that is when I'm landing, and am getting tired after 1 or 2 traffic-related go-arounds.... When I'm taxiing for takeoff, I'm usually still patient enough to just wait my turn.. (If it's really busy,the AI waiting in front of me will just disappear one-by-one anyway...)

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One major advantage of getting rid of AI traffic at busy airports is that this will increase your framerates, and, trust me, if you're at Gary Summons' Heathrow, with everything turned up, realistic weather, in a frame devouring addon, you'll be needing all the framerates you can get for take off. It's also a good idea to turn off "can crash with other airplanes". Otherwise you'll be restarting the sim 'til the cows come home. ricardo

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Lou,In fact I think you will find that LHR sits around 18th in the number of movements, most of those ahead of it are in the USA.Apart from the amount concrete the major factor in either hindering or expediting aircraft movements is whether or not a particular states ATC's are allowed to use discretionary landing and takeoff clearances. If ATC are not permitted to use this ICAO standard then things slow down. This I believe is the situation at LHR and probably at most airports outside the USA.Regards,Neil Bradley

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Wouldn't the large number of heavies also have some say on the number of movements, by requiring increased separations, especially as Heathrow uses only one runway for landings.Anyway, it seems LHR has runway space to spare, as they are now building Terminal 5.-

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The Airports Council International publishes useful statistics.http://www.airports.org/cda/aci/display/ma...i&cp=1-63_9_2__These show that in 2004 London Heathrow dealt with 67,344,054, ranking, 3rd after Atlanta with 83,606,583 passengers. It had 475,9990 movements, ranking 15th after Chicago O'Hare with 992,427 movements.However, as well as Heathrow there are another 4 international airports all within 30nm of central London (London Gatwick, London Stansted, London Luton, and London City). In 2004 for this group of airports, the total number of passengers was 128,927,508 and the total movements were 1,057,168. http://forums.avsim.net/user_files/133374.jpgThe last column shows considerable differences in the number of passengers per movement, reflecting the different types of aircraft using the airports.

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Another way to deal with AI traffic is to assign a key combination through FSUIPC (if registered). I assigned "Ctrl Shift NUM +" for 100% AI traffic, "Ctrl Shift NUM -" for 0% AI and a few keys in between for 20% 50% and 70% AI. Works great, especially on approach into a busy airport. If fps drop to much, with a single keypress I can reduce the amount of AI to get some of those precious fps back.And of course, if a queue is too long on departure for my taste, one key press and they're all gone. Two seconds later they find themselves sitting at the gates again, probably wondering what had happened to them. :)Regards,Jure

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I'm an Aussie-I flew into Dallas-FortWorth once(in real life) and was amazed at the traffic. I am very familiar with London Heathrow and can understand why it is so busy.Just out of curiosity, can you tell me why KATL, KORD an KLAX are so busy -- especially in regard to KATL being the worlds busiest airportRegardsBarry

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Just out of curiosity, can you tell me why KATL, KORD an KLAX are so busy -- especially in regard to KATL being the worlds busiest airportBarry, Glad you asked, because I happen to be an expert on such matters.After crossing the ocean you stop at KLAX to get gas. You then stop at KORD to pass gas. When it comes to KATL, they have the most facilities in the world to handle what comes naturally after passing gas in KORD. Of course, I could be wrong in my calculations since most of our politicians fly into Washington D.C. and we all know there is alot of #### there:-)Sorry for taking your serious question to the toilet.Best regardsJan1,KINDWhen I push the button and it works, I'm happy:-)

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