January 20, 201214 yr Hi everyoneFirst of all, my thanks and congratulations to all of those who have developed this wonderful aircraft. Not only is it a delight to fly, it's also a great change from the more "mainstream" FS offers around. Although new to it, it certainly has won me over ;)I do need help with an issue: I have version 1.40 correctly installed with all the upgrades as per the instructions. I also have the ISG suite installed and want to use the Smiths FMCcoupled with the SP-177 but I am having some issues. Despite many attempts, I can't seem to get the LNAV to engage. I know there have been some issues from what I have read in the forums, and I have tried all solutions given but to no avail. I am using the SP177 .with ISG and TCAS .cfg, I have activated the ISG in the TM.ini file as well as in the title line of the aircraft.cfg.However when flying I can never get the autopilot to follow the active flight plan waypoints. Sometimes when choosing the LNAV option with the FD activated and NAV selected in the RAD/NAV button, the FD bars seem to move in the correct direction, but the aircraft does not follow :sad:Has anyone had this problem? Could something in my installation / configuration be wrong? Or am I using the autopilot incorrectly? Any help would be much appreciated.ThanksAntonio LPMA
January 22, 201214 yr HiYou need to fly in "Nav" mode and not "Radio" mode.There should be a switch on the panel marked NAV RAD. Select Rad mode when using VOR and ILS.Select NAV mode when using ISG and LNAV mode.I think that should solve your problem.Trevor
January 23, 201214 yr For ISG1 LNAV to function, it is HDG mode in all other aircraft? NAV mode for all other radio nav function. ArDee
January 24, 201214 yr You don't need to select HDG mode. ISG normally requires HDG mode to be on before activating LNAV, but not if used in the Tinmouse. The LNAV button on the MCP will connect the autopilot to the FMS. Its a beautiful thing.I'm also pretty sure that it operates regardless of whether you selected RAD or NAV. I believe that switch is only used to select the HSI display mode. This allows you to set your course for the ILS without having to disconnect the FMS. Jim Shield Cybersecurity Specialist
January 27, 201214 yr when i used ISG with the tinmouse you had to have HDG mode selected for it to follow L nav Bob jackless
January 27, 201214 yr when i used ISG with the tinmouse you had to have HDG mode selected for it to follow L nav That's true for the original SP-77 autopilot, but not for the SP-177. The 177 behaves as CXA546 describes above.For the OP: it sounds like maybe there is no active leg set on the FMS. If you do a direct-to (drop a waypoint into LSK 1L and press EXEC) does that work? 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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