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Left flaperion hinge failure.

32 posts in this topic

Posted

The 140 doesn't have the piano hinge you see  on the 150/172. It has two metal ribtails similar to the kit fox. They go into the ailerons and are secured with a bolt and nylon lock nut. 

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Posted

The 140 doesn't have the piano hinge you see  on the 150/172. It has two metal ribtails similar to the kit fox. They go into the ailerons and are secured with a bolt and nylon lock nut. 

Yes, I remembered just after writing that - been too long away from older Cessnas.  Thanks,  EDMO

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Posted (edited)

I too wish you my regards.   I can't imagine how terrifying that must have been.  Divine intervention? Perhaps.  Major kudos  however are deserved; you were at the controls.

I'm rereading the Kitfox SB #9 and they make it clear that the standard rib tails will suffer side loads but to the extent 90lbs (12g's). That's pretty robust. The reinforcement is considered mandatory on each ribtail if "the rod type mass-balance is inserted in the leading edge of the flaperon".  Presumably thats the lead filled "2 tube.

It's reasonable to assume yours was subjected to a sideload of some kind. Some have been known to fail if rotten as someone else above pointed out.  

Thank you for sharing and hopefully you'll be flying again soon.

Edited by allonsye

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Posted (edited)

Man, thanks for joining up here and telling your story!  And I'm totally with you when it comes to the media!  When my dad dunked our KF2 on floats after the 532 dropped a cyl (he swam away safely) it was crazy to see the news stories and inaccuracies and "overcoverage" merely because it had wings.  One article even dramatized the "severe" nature of the damage with a photo of the "wings ripped off" as it sat on the trailer with the wings folded neatly at it's side! :lmao:

 

As to your accident, thank God for the outcome where no one suffered permanent injury or worse.  I agree, your "distress call" (prayer) was clearly answered!  It (God's hand of protection) becomes clear and undeniable when you witness it for yourself firsthand doesn't it!  I like the part of the cell phone laying in your lap when you woke up to an airplane that was NOT on fire!

And I am with the rest of the group here - rooting for you to get back in the air and put that day behind you.  That was truly a freak accident, but essentially no different than a countless many auto accidents.  Of course you (and your passenger) would get back in a car again right?

Take care, look forward, and get back up there again soon!

Edited by MN Kitfox 2
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Posted

Thanks for having the courage to share the details here, we all appreciate it.   Hopefully it's a very good reminder for us all to address un-reinforced rib tails!  

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Posted

Thanks for this post.  It motivated me to inspect the hinge points on the flaperon.  The wood was not rotting but the top part of the wood was delaminating.  I epoxied the wood and am fiber glassing the extensions.  Definitely something to pay attention to.  My plane has been inside for 99.9% of its life.  My guess is the dry wood getting wet one time and the drying again caused the delamination. 

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Posted

Yea, thanks! And so glad you both are okay. Before I bought mine I did a lot of reading. The only fatality I would find was from a flaperon hinge failure like yours. They said it was because of rot.

So that is one thing I really looked closely at before the purchase. I stripped all the paint off them, made sure they were solid, painted polyurethane on them then white paint. Mine has always been hangered, but I'll sure check them closely on preflight from now on.

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