Re: Sudden Engine Stoppage

Mark McAtee <gorgonc3@...>

As long as the engine has been de-certified (no longer bound by TC stuff) you don't have to do an inspection if I read the rules correctly. 

However.....why would one NOT take the opportunity to check it out, replace bearings, and generally freshen it up? For me trust in my engine is important.  I would always night..over water....away from home....when something would show up that I had the opportunity to fix.

 I have seen a crank that dialed "ok" come apart.  Evidently when the second blade hit, it bent the crank back and a crack started.



To: Q-LIST@...
From: sam.hoskins@...
Date: Sun, 8 Sep 2013 15:28:14 -0500
Subject: [Q-LIST] Fwd: Sudden Engine Stoppage


I just posted this on the Q-200 Engine list.

---------- Forwarded message ----------
From: Sam Hoskins <sam.hoskins@...>
Date: Sun, Sep 8, 2013 at 3:26 PM
Subject: Sudden Engine Stoppage
To: Q-200 Engine Group <Q-200_Engine_Group@...>

So as you may have seen, I had a sudden engine stoppage.  You can see the pictures here:

I downloaded the Dynon data and it seems to indicate the engine was turning about 650 RPM, though I really doubt it was that low. It was probably more like 800-1,000 RPM, since we were still moving pretty good when the canard broke.

I have a Catto composite prop and one blade took the entire hit, meaning it stopped NOW. There was no gentle deceleration, there was no mud on the other blade.

I immediately assumed I would tear it down and have it thoroughly inspected, by an experienced shop, for any damage.  Remember, just putting a dial indicator on the crank flange doesn't tell the whole story. Think of all the internal rotating parts that instantly stop.  The pistons, connecting rods,gears and magneto.

So, as of today, I am planning the teardown.  I would appreciate any other voices of experience out there to convince me it is not needed.

BTW - here are a few articles about sudden engine stoppage:



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