Well above they are saying it happens because I don’t lean on taxi. I’ll give it a shot anyway.
Happens every second flight for me. Leaning often works, sometimes just waiting for the engine to get even warmer than needed helps.
I’m just accepting it as high fidelity behavior that I don’t need to understand. In other high fidelity planes I’m normally doing the run-up with full mixture and in many of them it’s also part of the checklist to go full mixture for this.
I’m sure it’s how it’s supposed to be, they have for sure done it like a hundred times when testing the plane, so I trust it to be correct 
I was also getting the >200 RPM drop on one of my mags…switching to fine spark plugs as well as leaning seems to have done the trick for me.
It is a redundancy feature, but not “just.” It’s also more efficient to burn the fuel/air mixture with two spark plugs per cylinder, which produces more power. Hence the power drop when you go to one mag, even without a plug being fouled.
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Yup. If the spark plugs are fouled and causing the RPM drop there is nothing wrong with the magnetos. It’s just carbon residue on the old sparkies tbat can be burned off again, not damaged parts.
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Additionally the point of flying a circuit at an uncontrolled or quiet field is two fold. As above but also to check the condition of the field and the winds, which runway is appropriate for landing? Is the runway clear of debris? Obstacles on the approach? Any traffic in the area which are NORDO (no radio). These are the extra reasons for following good circuit procedures. (In Canada at an uncontrolled aerodrome you cross midfield from the dead-side before entering the circuit)
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You might have plug fouling. Set your throttle to say 1800-2000 and lean the mixture until just before the rpm drops. And wait, any fouling should burn off in about a minute or so. Then do your regular magneto check. Of that doesn’t fix it, return to the hanger and call your AME. 
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Also, at 500’ above circuit height. You only descend to circuit height after crossing mid-field, reaching circuit height as you enter the downwind for your chosen runway. That’s easier to do at an airport that has one lefthand and one righthand circuit (because the patterns are on the same side of the field). At uncontrolled airports where the patterns are on opposite sides from each other, you might need to do the “double cross” method, where you cross mid-field twice before joining the pattern. All fun to practice in an aircraft like the A2A Comanche, and different than just shooting ILS approaches in an airliner.
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Ah yes, I really need to practice my tear drop entries. I usually fly over and then fly away from the airport a bit before turning back and joining downwind cus I’m terrible at judging tear drop entries.
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My world tour has let me to the heart of the Sahara, and the Comanche is struggling. Surface temperatures are 42-45 C and at FL090 it’s around 20 C. The struggle is my CHT get over 380 F and I get the warning. How long can I sustain that? It goes away when I get higher up and set cruise power. Can I keep the CHT around 400 F for a 15 min climb?
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Run it as rich as you possibly can without losing too much power (richer mixture helps with cooling), and climb at a shallower angle if you can so you get more airspeed to force more air into the cowling.
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390, is where you need to start worrying… just keep the analog CHT needle, in the green arc…
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100AW oil and fly in the evenings
Not to mention it saves you gas, too…
Thinking of doing a round the world trip myself …
…Does anyone know (and keeping it simple!) what the parameters are to qualify as a round the world flight?
…I could just pop to either of the poles, whizz round them in 30 seconds and job done!
In real life there must be rules required? …anybody know?
Check this for inspiration and a very nice route to take. If you care about realism in a political sense, this is a route that avoids most politically sensitive countries for lack of a better term in this context.
Rule no. 1 is to have fun. Fly where you want to fly. There are no hard rules. My personal rule is to touch on every continent.
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Here’s a link to Wikipedia that contains the rules for cycling around the world. Might give you some ideas.
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The Federation Aeronautique International (FAI) seems to have somewhat lax rules about what’s considered a circumnavigation. By their definition, the route must start and finish at the same point and cross all meridians. It must also be at least 36,770 kilometres long (which is approximately the length of the Tropic of Cancer).
So, in other words, you could fly in a big circle that’s smaller than the Earth’s circumference, never cross into the southern hemisphere and still be credited with a circumnavigation. Lame.
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On my World Tour that I’m doing on an off for 9 years now I’ve covered 76,058 kilometers so far, so I got that nailed. My World Tour Comanche is currently parked at Uyuni, Bolivia. Still gotta go down to Cape Horn, all the way back up to Canada via the East Coast of the Americas and then the little hop over Greenland back to Europe and Germany. Should only take a few more months. 
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Hi everyone!
Just a heads-up that we released an update to the Comanche today to add support for the terrific ‘falcon71’ KLN 90B GPS. This free GPS package is clearly a work of love, so many thanks to the dev, not just for creating it, but also for his prompt and helpful support in terms of testing and integrating it with the Comanche’s autopilot.
Although the KLN is a fairly early GPS system in GA terms, it has some nifty features and it’s pretty convenient to use in the sim with an option for direct keyboard entry in cursor mode. In other words, don’t be too intimidated by the lack of a large touchscreen!
If you already have the KLN installed, please make sure you update to at least v1.3 of the package:
GitHub - falcon71/kln90b: KLN 90B for MSFS
Also, just a note to advise that the optional “pms50-gtn750wtt-aircraft-a2a-pa24” package will disable the KLN and is no longer required. That’s because this latest version of the Comanche includes native WTT support for the PMS GTN 750.
Thanks and hope this helps to introduce at least a few simmers to this great little GPS package! 
Nick - A2A Simulations
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