You may try this: http://fuelplanner.com
Way back, in post #782, meh1951 made reference to a pilot’s operating handbook:
Super King Air 350 & 350C Fusion POH P/N 434-590169-0003
I downloaded it from somewhere but not sure now where I found it (tried just now without success 
Anyway, if you can get it, you’ll find tables and graphs for power settings / fuel burn in the performance section.
I think that’s post 441 from Norman999933
It’s in Section 5-5 I think
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Thanks very much, it sounds like this may have been a bug then. Incidentally I managed to complete a flight last night with no issues. If it happens again I’ll submit a bug report to Just Flight.
Indeed! Thanks meh1951 
Tables for normal cruise flight begin on page 5-159.
Thank you.
Any news on when they will release an update to King Air? Only having FPS problems with this aircraft
I’m considering buying this mod for IFR flying, but it’s not clear from the thread whether the developer ever got vertical guidance (glide path) working on supported RNAV approaches with the PMS 750. Can anyone confirm that the HSI shows vertical guidance and the autopilot captures the glide path on LPV RNAV approaches when flying with the PMS 750 in WT mode?
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I have with the WTT addons in the Marketplace, PMS in-cockpit mod, and the payware GTN750.
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Anyone else get conflict with PMS750 and the updated WTT update from microsoft for the 430/530?
My plane will not follow the NAV line, and gets lost, when I removed the 430/530 update on content manager, it flew fine, but my Fly Inside 206 will not have a 530 displaying without the WTT version installed.
Anyone know of a fix, or work around?
Weird. On my system the frame rates are excellent, also in VR. What navigation system do you use?
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Tried the native KNS 80 and GNS from Working Title. The frame rates at start are normal, but starts to degrade during cruise.
When I enter the menu, the FPS rises again, as long as the GPU use, and when quit the menu and continue the flight, the FPS drops again until I restart the sim. Very frustrating.
I also use VR (G2), but it happens in 2D as well.
Frame rates for me are excellent. I routinely do 2-4 hour flights with no degradation.
Did you try different glass cockpit refresh rates in the graphics settings?
I also have no FPS problems, nor degradation during long flights. No TDS or PMS 750, only WT530 and Radio navigation. And I use enhancements by JayDee available on flightsim.to.
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I tested it now, no results
Is anyone else having problems with this plane when using the PMS GTN750? I have the WT GNS installed plus the premium version of the PMS GTN750. I have also installed the “In cockpit WTT mode” addon for this plane from the PMS website. I have found that when I do this though the Approach button becomes unresponsive. I can load an approach procedure but when I attempt to activate the APR button nothing happens.
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Yesterday I bought TDS NXi and used it in combo with WT530, and there were some problems with click spots on TDS, like half the screen was not responsive.
On Analog Caravan WT430 would not start if used with TDS and there I had all sort of problems with autopilot. I could not disengage VS no matter what I did, aircraft just kept getting higher until I pulled a circuit breaker and resumed manual flight.
Yeah I’m having problems with a few planes since these WT530/430 shenanigan’s began with SU11. The only plane I own which performs absolutely flawlessly since (as far as avionis go) is the FSW 414. But I think that has the WT code built in if I’m not mistaken. Guess we’ll just have to wait for the other devs to catch up.
I believe the conflict is with the Marketplace Garmin 530 and the workaround is to uninstall/delete that from your Content Manager and restart the sim. That should revive the TDS GTNxi.