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-   -   A very disturbing discovery in my RV (https://vansairforce.net/community/showthread.php?t=159714)

Sibirsky 04-19-2018 12:04 PM

A very disturbing discovery in my RV
 
My RV is sitting at a paint shop waiting its turn to get new colors ,
after months of waiting work finally begun , and all the moving parts were removed , i was called to the shop yesterday , the owner wanted to show me something very disturbing , considering i ferried the bird from Virginia to New york , and did all kinds of maneuvers with a renown RV'er to get familiarized with the airplane , i THANK GOD day and night disaster didn't happen ,
the prebuy was done by someone who weights very heavy in the RV world , i paid over 2K just for the inspection itself , enough said , here are the pictures .





Sibirsky 04-19-2018 12:06 PM

https://www.flickr.com/photos/159728...posted-public/

Flying Canuck 04-19-2018 12:11 PM

Yikes!! That wouldn't be good to discover in the air. Ailerons work better when they work.

Sibirsky 04-19-2018 12:24 PM

Quote:

Originally Posted by Flying Canuck (Post 1254178)
Yikes!! That wouldn't be good to discover in the air. Ailerons work better when they work.

Yeah , im still scratching my head , the bolt was put backwards , with no jam nut
how did the bolt even stay in , with gravity ?

rvbuilder2002 04-19-2018 12:42 PM

Quote:

Originally Posted by Sibirsky (Post 1254181)
Yeah , im still scratching my head , the bolt was put backwards , with no jam nut
how did the bolt even stay in , with gravity ?

Actually, I think the photo is upside down so the bolt is correct.

Possibly the only thing that kept it connected.

Correction
I hadn't noticed there was more than one photo so initially I had only looked at the first one.
Now I realize this is probably an RV-9 which has the bellcrank flipped around with the aileron interconnect push/pull rod at the bottom.
First hand example of why specific bolt orientations are specified.

alpinelakespilot2000 04-19-2018 12:50 PM

Concerning indeed, especially given that a paid inspection happened.

That said, I'm curious if Scott or anyone else knows what the impact would be if the pushrod became disconnected. Absent it jamming, and acknowledging that you'd effectively lose the up control stop for the opposite (good) aileron, would control authority from the opposite aileron be sufficient to fly?

Vlad 04-19-2018 12:50 PM

Trust but verify Sibirsky. Dang I flew the bird and even gave her a good workout. In spite I gave you the recommendation on the inspector I still have the same opinion on all these pricy pre buys. I voiced offline to you and I stick to it.

BobTurner 04-19-2018 12:52 PM

Something similar happened to a -10. Builder removed the nut in the pitch control circuit to ?temporarily? insert a rigging template. He forgot to re-install the nut. Bolt came out on final, nose first landing did in the nose gear, prop. Fortunately no injuries.

rvbuilder2002 04-19-2018 01:10 PM

Quote:

Originally Posted by alpinelakespilot2000 (Post 1254186)
Concerning indeed, especially given that a paid inspection happened.

That said, I'm curious if Scott or anyone else knows what the impact would be if the pushrod became disconnected. Absent it jamming, and acknowledging that you'd effectively lose the up control stop for the opposite (good) aileron, would control authority from the opposite aileron be sufficient to fly?

My theory is that if this particular bolt came out that the push/pull tube would drop away and the aileron would float in trail at some unknown equalirium point that would probably result in some roll imbalance, but I think you would be able to counter that with the opposite aileron and still have an acceptable amount of roll authority (though that is not based on any first hand experience and I am not raising my hand to volunteer to test my theory).

If the bolt for the lateral push/pull tube fell out? Chances are pretty high it would result in jammed ailerons.

gasman 04-19-2018 01:38 PM

Quote:

Originally Posted by Vlad (Post 1254187)
Trust but verify Sibirsky. Dang I flew the bird and even gave her a good workout. In spite I gave you the recommendation on the inspector I still have the same opinion on all these pricy pre buys. I voiced offline to you and I stick to it.

Why is there such a color contrast between the pictures?


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