GreenPilot86

Thanks for updating us with the probable cause. I wasn't aware that anti-ice was modeled and rarely use it as I am not in a cold-wx area at the moment. However, just for laughs, I tried a takeoff just now from PANC (wx: OAT -4C with light snow) and went through my normal checklist, without activating any ice protection though conditions warranted it. I never got any messages about anti-ice / ice protection. Like you, I generally do not turn on the pitot / static heat until lined up on the runway and ready for TO, so I always see those messages, along with the Parking Brake. I accelerated to Vr and took off, but never got any warning or caution. It seems that in my particular aircraft, anti-ice is still not modeled and like you were able to previously, am able to operate without it. I have never used the Datalink option, I wonder if that is related. Or else something got updated in your sim when this started a few weeks ago?

A couple to add to my already long list that I inadvertently left out: FSLTL traffic injector Grand Tour Flight Planner - this is only before a flight, and only if I am considering multiple flights, to get distances between airports MS Excel has a great FORECAST function that I use to estimate my fuel needs more accurately, in conjunction with my log which tracks actual fuel usage and distances. I can't tell you the number of times Simbrief has declared my fuel insufficient when I've entered my flight data, only to have plenty to spare when I make the actual flight. I also use Excel to evaluate possible jobs and cargo in Neofly.

My workflow for MSFS 2020: (Apps in green are always used, those in purple I only use sometimes) MS Excel spreadsheet (flight logs and planning) Neofly 4 Web Sites: Sky Vector and SimBrief, sometimes Windy as well Navigraph Charts (import Simbrief flight plan) Pilot2ATC (if I decide to fly with ATC) Little Nav Map (import Simbrief Flight Plan) OBS Studio (if I am recording my flight) Add-ons Linker: This will launch the following programs: MSFS 2020, Pop-Out Manager (admin mode), Air Manager (admin mode), FSUPIC7, Axis and Ohs (admin mode) Add-Ons Linker closes once the sim is launched, the rest stay on during the entire flight. I do use the Elgato Stream Deck XL during flight (thank you @guenseli), but I don't use the app itself within the context of a flight, only to add or rearrange / organize buttons occasionally.

I've been flying the CJ4 exclusively in MSFS 2020 for the past 5 or 6 months and have not seen this particular problem. I just now completed a mission PTPN-PKRO without incident. However a couple of months ago I also had something strange happen - on two consecutive flights, as I climbed above 10,000', I got a warning about cabin pressure (do not recall the exact wording) and the cabin simply would not pressurize. I continued the flights without any other issues, but am still baffled as to those occurrences. I suspect something I may have changed in the flight plan caused it but not really sure and have not had any problems in a long time, and have not been able to replicate it. Otherwise, the CJ4 is a beauty to fly in 2020. I guess I would check the flight plans for something unusual, if it's something that's just started. If you can, do a flight from before this started happening and see what happens.

Simbrief for flight planning, but not used during flight. During the flight: Add-Ons Linker to start the following: MSFS 2020 Pop-Out Panel Manager Flight Recorder 0.24.0.0 Air Manager FSUIPC 7 Axis & Ohs Mobiflight GSX Pro Navigraph Charts / SimLink Little Nav Map Pilot2ATC v3 / FS-ATC Chatter FSLTL OBS Studio

Hi, Dave, I know you said it will be fixed. Just as another data point, same issue here with 0.0.26E. Here is my flight plan: TNCB/10 N0323F250 ARUB1R ELUMO DCT DAVLA DCT TNCA/11 Just Validating and then Filing the plan duplicates. It was actually fine in 0.0.26C (different flight plan). Hope this helps.