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Cold and Dark question

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    Cold and Dark question

    I notice that PMDG cold and Dark has some things turned on in all the aircrafts. Is the cold and dark settings what a pilot sees setup, meaning someone else came in and got it ready for the pilot. I do turn everything off and save a state that way, but just wondering. On the same topic, the B777 cold and dark IAS on the MCP is set to 200. The V2 speed is almost always less so I lower it. Is the V2 only a reference because when flying VNAV does it matter if I leave the 777 MCP set at 200.
    Dean Salman

    #2
    I never flew the 777, but on the 767 the speed on the MCP panel always defaulted to 200 when the system was powered up. And yes, we did have to lower it to whatever speed had been calculated. So that is probably prototypical.

    As to what is or is not turned on when a pilot gets to the airplane, I can only say that in my entire 31 year career, including 10 years as an FE, I can count on my hands and feet the number of times that I ever say a "cold dark" airplane (ie, one that even has the battery switch turned off). Invariably, either maintenance or someone from the station had at least gotten external power hooked up and turned on (or the APU back in the 727 days) and generally Captains, in particular, never saw cold and dark. As I said somewhere else a while back, if you want to start cold and dark, take the right seat for the flying because that is FO or FE work, not Captain work!!
    Tony Vallillo

    Comment


      #3
      Originally posted by dsalman1 View Post
      I notice that PMDG cold and Dark has some things turned on in all the aircrafts. Is the cold and dark settings what a pilot sees setup, meaning someone else came in and got it ready for the pilot. I do turn everything off and save a state that way, but just wondering. On the same topic, the B777 cold and dark IAS on the MCP is set to 200. The V2 speed is almost always less so I lower it. Is the V2 only a reference because when flying VNAV does it matter if I leave the 777 MCP set at 200.
      Cold and dark does not mean every single switch is turned off. It means all power off and secure for the next power up. Many switches are left in their normal or auto state. The PMDG cold and dark state represents how an aircraft is typically left with power off. That may well vary from airline to airline, depending on their SOP.

      As for the MCP, as Tony said that's how the unit powers up. 10,000 isn't a typical cruise altitude either. You'd have to adjust both for any given flight, it doesn't really matter what the initial settings are.
      Last edited by Kevin Hall; 24Sep2022, 22:49.

      Comment


        #4
        Originally posted by dsalman1 View Post
        I notice that PMDG cold and Dark has some things turned on in all the aircrafts. Is the cold and dark settings what a pilot sees setup, meaning someone else came in and got it ready for the pilot. I do turn everything off and save a state that way, but just wondering. On the same topic, the B777 cold and dark IAS on the MCP is set to 200. The V2 speed is almost always less so I lower it. Is the V2 only a reference because when flying VNAV does it matter if I leave the 777 MCP set at 200.
        The V2 speed dialed into the MCP informs the system of what speed range to target in the initial climbout prior to acceleration height.
        Matt Smith

        Comment


          #5
          Originally posted by Kevin Hall View Post

          Cold and dark does not mean every single switch is turned off. It means all power off and secure for the next power up. Many switches are left in their normal or auto state. The PMDG cold and dark state represents how an aircraft is typically left with power off. That may well vary from airline to airline, depending on their SOP.

          As for the MCP, as Tony said that's how the unit powers up. 10,000 isn't a typical cruise altitude either. You'd have to adjust both for any given flight, it doesn't really matter what the initial settings are.
          ah and what about the preset frequencies that were left in com1 and com2 on the nav? Instead of 122.80 as I left it, it is always 124.5 when I power it back up after doing a new panel state save. and this is the 737-7 in MSFS..
          Jason Saucier

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            #6
            Thanks Guys, this was very helpful
            Dean Salman

            Comment


              #7
              Originally posted by Saucey12 View Post

              ah and what about the preset frequencies that were left in com1 and com2 on the nav? Instead of 122.80 as I left it, it is always 124.5 when I power it back up after doing a new panel state save. and this is the 737-7 in MSFS..
              They come from the panel state. If you save a the panel state before you close the sim and load that state when you start the 737 again the frequencies will be restored.

              Comment


                #8
                I do like turning on everything, so I am thinking of adding a initialization section turning on the initial switches. I notice one think in the P3D cold and dark vs MSFS cold and dark is that the APU bleed is turned on in the P3D version. I wondered why that would be on in the P3D version. I noticed that the Engine Bleeds are on as well with Cold and Dark so I guess it does not matter if the engines are running or not
                Last edited by dsalman1; 25Sep2022, 22:05.
                Dean Salman

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                  #9
                  Engine bleeds would remain on during a shut down to cold and dark. APU bleed would be turned off before APU shut down.
                  Andrew Crowley

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                    #10
                    Originally posted by Stearmandriver View Post
                    Engine bleeds would remain on during a shut down to cold and dark. APU bleed would be turned off before APU shut down.
                    Interesting. I presume ground conditioned air is going to be connected within a few minutes of engine shut down so I just use the APU for electrical until the umbilical is attached. This avoids the use of dual bleed sourcing to the packs. Sounds like I'm being too conservative.
                    Dan Downs KCRP
                    i7-10700K 32GB 3600MHz 3080Ti

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