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Not if the full rich setting isn't rich enough. There are a lot of different carburetor part numbers with different calibrations for different applications. Some have a richer full rich calibration than others. A carburetor calibration on the lean side may be exacerbated with a change in fuel.

Does that weight include the coolant and cooling system? Or just the engine? Diesels will generally be more efficient, not less, but not by a large margin. So you could carry less fuel but the fuel you do carry is going to weigh more. Ultimately, I think this is a wash for performance and fuel...

What we need is a constrained test (multiple tests would help too). From the sounds of things, the UND “test” was not. We do this kind of stuff in the engine test lab in which I work all the time. One would think Lycoming and Continental would have done some unleaded fuel testing by now but...

Valve and seat material choice may be an issue. Of course, you’d think Lycoming would have considered that already, as they have published documentation stating that their engines will run on unleaded fuels. I also have a hard time believing that UND’s engines did not ingest ANY leaded fuel...

The Chinese will build at whatever quality level they are commissioned to, but the price will reflect it. Where ethics can become a problem is that they'll start cutting corners to increase profits hoping that their customer doesn't notice. Sometimes they do, sometimes they don't. The reason you...

Because you may not have enough paperwork to prove that you actually have the authority to sell it. Before I did anything, I'd work on getting the aircraft ownership transferred to you. Once that process is completed then there should be minimal trouble. Lots of people can't figure out how to...

From Rotax?

Not all states have such requirements, although I am aware that some are stricter. I have vehicles registered in both states that I have residences in.

I'm curious, what was his reasoning for the personal limitation? I didn't limit myself like that but I was also working on a lot of the same aircraft before I had a mechanic certificate at all.

You don’t understand. Your “federal address” isn’t changing. It’s just the address that the FAA is using to send correspondence. There’s no reason it couldn’t be the same as your driver’s license. I use one property of mine for residency despite it now t being the property I am at more. I pay...

Then you created your own problem. The FAA simply wants an address where they can contact you and send things to. In my opinion, your best option at this point would be to either change your driver’s license or your address with the FAA. PSI is not really the issue here, they’re just a...

In my opinion, you’re making your life not fit in the boxes. Pick an address and use it for all your dealings with the FAA. What did you use for your student pilot certificate and medical? I also have multiple residences. It has never been a problem.

Hour meters are nothing new. ECUs have been recording data like that for a long time now (and a lot more). The operator just can’t see it in a lot of cases, but mechanics can if they use diagnostic tools. Things like hour meters, key cycle counters, data recorders, etc. can and are used to help...

I wonder if we’d have a thread of this magnitude and FAA intervention if Trent were flying a helicopter instead.

Unless things have changed, the plane power regulator is adjustable. You have to pull the cover off to get to the trim pot.

Assuming you want to buy your way out of maintenance headaches or problems, it won’t happen. There are benefits to buying the nicest, newest airframe you can find but there will still be things needing continuous care. And many of the fancier, newer aircraft have airworthiness limitations on...

Even when everything is new and/or updated, aircraft will never be as maintenance free as late model cars are. A person’s ownership experience will generally be negative I f that is the expectation. With that said, most aircraft generally aren’t maintenance intensive either, as long as...

There are plenty of good studies (white paper type material) on ZDDP and its effects. Short answer is yes, there are limits to how much ZDDP is good. FWIW, ZDDP is not used in the typical aircraft engine oils. I would not be adding a bunch of anything to the oil without knowing what effects it...

Unfortunately, in one of the cases I mentioned that's basically what they basically did. I'm not happy about their decision, but I had no say in the matter either.

I agree for the most part, but I have seen a couple of guys get endorsed in the last 2-3 years that have had little or no documentation substantiating their experience, so as usual it seems to depend on who you ask and how the case is presented. If I were Rob I wouldn't give up hope without at...