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Anyone familiar with Canadian Pacific's DC-6B transpacific ops?

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    Anyone familiar with Canadian Pacific's DC-6B transpacific ops?

    My understanding is that Canadian Pacific promoted their DC-6B service from Vancouver to Tokyo and vice-versa as non-stop. The route is right on the maximum range of the aircraft so it seems like you'd only be able to make it with absolutely perfect conditions, so I'm curious if anyone is familiar with how often they were able to actually make it non-stop and, when they didn't, where they would have made the technical stop? Seems like cheating north to reach Anchorage for a fuel stop would extend things so much you couldn't then go on the rest of the way without stopping, so it'd be a de facto two stop, and this brief documentary clip suggests they just did a simple great circle through the Aleutians.
    Bill Williamson

    #2
    Originally posted by MediumRareBaku View Post
    My understanding is that Canadian Pacific promoted their DC-6B service from Vancouver to Tokyo and vice-versa as non-stop. The route is right on the maximum range of the aircraft so it seems like you'd only be able to make it with absolutely perfect conditions, so I'm curious if anyone is familiar with how often they were able to actually make it non-stop and, when they didn't, where they would have made the technical stop? Seems like cheating north to reach Anchorage for a fuel stop would extend things so much you couldn't then go on the rest of the way without stopping, so it'd be a de facto two stop, and this brief documentary clip suggests they just did a simple great circle through the Aleutians.
    Hello Bill,

    What flight level have they used for Vancouver-Tokyo?

    POH for DC-6 demand to use 9000ft to get maximum range, but as I've seen from this video plane flew definitely higher then FL90.
    Dmitry Arkhipov

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      #3
      Originally posted by MediumRareBaku View Post
      My understanding is that Canadian Pacific promoted their DC-6B service from Vancouver to Tokyo and vice-versa as non-stop. The route is right on the maximum range of the aircraft so it seems like you'd only be able to make it with absolutely perfect conditions, so I'm curious if anyone is familiar with how often they were able to actually make it non-stop and, when they didn't, where they would have made the technical stop? Seems like cheating north to reach Anchorage for a fuel stop would extend things so much you couldn't then go on the rest of the way without stopping, so it'd be a de facto two stop, and this brief documentary clip suggests they just did a simple great circle through the Aleutians.
      Note the aircraft is cruising at 10,000 ft with power set to 2200/162 psi (or 32 inHg). That is pretty close to the 1200 BHP setting shown on the chart, so allowance for temperature/density altitude I'd guess that's where they have it set. I also heard the Captain mention non-stops going East (Tokyo-Vancouver), which implies a stop is probably routine for the Westbound. The obvious choice is Cold Bay AK, which is used to this day as an EROP alternate for N Pacific flights. The Captain mentioned Westbound altitudes of 8, 10 ,12 and 14 thousand, no surprise.
      Dan Downs KCRP
      i7-10700K 32GB 3600MHz 2080Ti

      Comment


        #4
        Northwest and Canadian Pacific both used Shemya Air Force Base (PASY) as a technical stop in the 1950s.

        https://en.wikipedia.org/wiki/Eareck...on#Postwar_era
        Last edited by FlyrFred; 14Sep2021, 11:23.
        Fred Douglas

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          #5
          Originally posted by FlyrFred View Post
          Northwest and Canadian Pacific both used Shemya Air Force Base (PASY) as a technical stop in the 1950s.

          https://en.wikipedia.org/wiki/Eareck...on#Postwar_era
          The mission of the base changed radically during the cold war. Air defense radars were installed and hundreds of civilian and military assigned to maintain it.
          The base is not equipped to feed, shelter and provide assistance to passengers of large modern airliners, which is a requirement for modern EROP alternates. The base will of course support a commercial aircraft in distress, and I think "technical stop" is a term that means emergency alternate.

          I believe just last year a 777 (UAL I think) had an engine problem and rather than land at Shemya, which was closest, they elected Cold Bay based on the nature of the problem and (I assume) consultation with company. Companies have working agreements with entities at these locations to ensure that the passengers receive shelter. There are prepositioned assets and contingency plans in place.

          Update: Second thoughts, maybe that was a diversion to PASY which one would do if you were single engine. LOL memory is being fickle.
          Last edited by DDowns; 14Sep2021, 14:12.
          Dan Downs KCRP
          i7-10700K 32GB 3600MHz 2080Ti

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          • FlyrFred
            FlyrFred commented
            Editing a comment
            Yes, all that is true after the airlines stopped using it as a technical stop - which also means a brief planned refueling stop, not just emergencies. PASY has had a lot of roles for sure.
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