December 25, 201015 yr Hi BobJust one question (because I am ignorant) - in the SP-177 AP/AT notes you mention that the plane will do gentle porpoising movements while using LVL CHG. I see it moves about 300'/min at a time.What I wish to know is, does this also occur in the real world airplane ?I would also like to thank you most sincerely for this update - absolutely fantastic. I feel like I'm back in the 60's - THANK YOU.Merry ChristmasRegardsTrevor
December 25, 201015 yr Hi BobJust one question (because I am ignorant) - in the SP-177 AP/AT notes you mention that the plane will do gentle porpoising movements while using LVL CHG. I see it moves about 300'/min at a time.What I wish to know is, does this also occur in the real world airplane ?I would also like to thank you most sincerely for this update - absolutely fantastic. I feel like I'm back in the 60's - THANK YOU.Merry ChristmasRegardsTrevorYes, although maybe a bit less pronounced. In the Gulfstream III we had an A/P built at least a decade later, and the nose would constantly hunt up and down in a FLCH climb (different name, same mode). Even in a G-5 with a state of the art digital A/P, the pitch changes are noticeable.Merry ChristmasBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO Bob Scott | President and CEO, AVSIM Inc ATP Gulfstream II-III-IV-V Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090 Samsung 55" JS8500 4K TV@60Hz, 3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090 Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus, TM TCA Officer Pack, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case
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