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The service bulletin referenced in AD 95-09-08 provides details on the oil needed.

The usefulness of a scope depends on the activities one is engaging in. I’ve made my living working on developing and also servicing vehicle electronics for close to 30 years now and have found that a scope is mostly unnecessary in the hangar or garage at the level most professional mechanics...

Perhaps a GDL 82 would be a better solution.

As far as I know, that’s the standard Chrysler brush setup.

As Ryan pointed out, that is not always the case. Some items have very specific installation requirements if you’re going to actually install the item in accordance with an STC. And, I’d argue that all the non pullable breakers that Piper installed 50 years ago should be the ones in the junk box.

One thing to be careful with is that not all MK12D radios are the same. Some were built as slide in replacements for other applications while others were meant for a new installation. Personally, I’d take the opportunity to install a radio that is supportable. New com only radios are relatively...

Some Lycomings have different rocker arms on the intake and exhaust. They are all the same on the newer engines I've worked on. No clue what ECi was doing on the Titan engines. As far as I can tell, the primary reason for the difference in rocker arms was to discourage oil consumption via the...

Regarding time to solo, the Robinson SFAR is also a contributor for many folks in civilian training.

I don’t know why they do it that way, but it is a common thing, even in modern engines made by various manufacturers in all sorts of different applications. In fact, most or maybe even all of them I’ve seen are like that.

That’s why I would use a thermocouple. And I do calibration and instrumentation for a living. Edit: Perhaps I should be more clear. Generally speaking, thermocouples and their measurement devices can go without a calibration and provide adequate results. In the test lab we only calibrate...

That is an easy check but will only give you the option to check temperatures at or below 100 degrees C. The thermistors that are commonly used in these instrument clusters are often nonlinear, so I would want to check a wider range if possible. Especially since the belief is that your oil...

In my experience, flushing with solvent doesn't do a lot of good. You'll get some stuff out but it won't all come out and a lot of varnish will be left behind. The Pacific Oil Cooler treatment will get things out of a cooler that you couldn't otherwise touch. I'm not convinced their cleaning...

Those are part 61 requirements.

That’s essentially what I’ve done. Fly to the Dalhart area and head west. It’s an easy trip.

What is stamped on the prop itself (both P/N and S/N)? It wouldn’t be the first time I’ve heard of a logbook not accurately reflecting what is installed on the aircraft. It is also a good lesson on why mechanics should verify that the records match the configuration of the physical aircraft when...

Since everyone is piling on about the starter solenoid, it is worth mentioning that it is common for them to get welded contacts when you try to start an engine with a dead or failing battery. I'd expect it to be more probable in aircraft equipped with antique starters.

Some of your questions might be answered if you go back and look at why the prop on your airplane was changed and the 74” propeller ended up on there. My guess is that some event happened that required a prop replacement and someone found the one that you had and thought it was a suitable...

Not all S-LSAs allow instrument flight in their operating limitations. Do you know if the one in question will allow it for sure?

Before going any further, will the operating limitations for this S-LSA allow it to fly under IFR and/or enter IMC? If not, there might not be a reason to consider an upgrade.

Some guys prefer to use the back of the ring gear and the spine while other guys prefer to use the starter mark and the front of the ring gear. Perhaps your guy favors the first method and didn't think to mention the others because there was no need to employ them on your airplane. In my...