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I received this today from the NTSB chief scientists investigating recent 601XL crashes.

Take me off the list ... I already have a cable tension meter and a gaggle of other tools needed to properly maintain an aircraft. Their costs were minimal compared to the cost of the aircraft.

Per ...

If you are pursuing something pertinent to possible design differences with CZAW and ZAC plans ... by all means do not cease asking questions. I have a set of designs that go with the plane and I can ...

I see that you are referring to the rear spar and attach points (6b5-1,2,4,6), the center arm rest (6b18-1), the seat belt attach points (6b18-3), flap rib (6w1-1), flap skin (6w1-2) and forward side ...

Sabrina, the aircraft was built as per ZAC drawings in order to qualify as LSA class.

How would one know if any of the parts below were "changed"? Please clarify what it is you want to kn ...

By your same logic ... if it looks and smells like bull 5h1t, then it's bull 5h1t!

The reason my posts are all on the same subject is quite simple, I own a Czech 601XL.
An aeroplane that I am ex ...

The lady doth protest too much.

Paul, are you a spokesman for ZAC, I wonder?

Try placing your hand at each end of the aileron and push down with one hand and pull up with the other. There is a lot of give in a hingeless that's not there in a hinged. Would this allow the hingel ...

I can't imagine why someone would spend so much money and time on such a thing as aircraft, yet not invest a few hundred in a cable tension meter (or pay an AP to check the tensions). There's cheap, a ...

I do not recall that ZAC ever did a negative G static test on this aircraft.

I guess I still don't understand the difference between static and dynamic loads. The report said that all the overload ...

The problem is that the aileron's are relatively fragile. One good bump of the stick could bend both aileron's and or flaps. I use a bungee cord to pull the stick forward. One hook to each rudder peda ...

If by "reduced" you mean thinner, the Grove gear is actually 1/8 inch thicker (if indeed it is 7/8" vs. ZAC 3/4".

10 lbs is significant. Every bit adds up. The paint might weigh ...

It may be that the NTSB investigator assumed that the aircraft was Euro spec because it was imported. He did not know it was an LSA until I told him. This information is not readily available on the p ...

It takes a man of integrity to admit a mistake. Thank you for sharing this with the forum.

Dear 601XL Builders and Flyers, my eyes have been opened to an issue. All this talk about flutter and cabl ...

You are correct about the gear, the hinges and the trim tab. However, the CZAW sold in the US were to LSA standards and had the heavier Grove spring aluminum gear. The airframe materials come from the ...

To anyone who read this post before I edited it ... the country in question is the Netherlands, not Belgium.

I recall that there was a 3rd, but the NTSB seems to be under the impression that there were only two. Thank you for the info. I'll pass it along.

I wonder if you have verified the cable tensions for your ailerons. This seems to be a focus of concern with the NTSB regarding aileron flutter.

My purpose in posting this is to make information available to builders and owners. This may affect your periodic or annual inspection. Attention should be given to the wing rear attach points at the ...

Anyone had any experience with this product: http://www.pantheonchemical.com/prekote.htm

It seems like it would save a lot of time, some money and avoid a lot of nasty chemicals.