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When I used to work at Sikorsky, Q/A was an important part of the job. Inspectors independently go over the work of others to ensure it is up to standard. The first step in quality, however, is to be critical of your own work. Quality is built in, not inspected in. The other day my 12 year old was u...

We had a similar switch on our tow reels at Harris Hill where I used to tow gliders. You would flip the switch on in the pattern once you were below 100 mph and were supposed to turn it off when it was retracted. Easy to miss, when the motor stalls for a bit the switch trips and you can hear it at l...

My son and I have 50 hours between the two of us. We are right on your tail!

Great pics Robbie. That is a lot of Sonexes!

I have one like this, but clunkier. One of my favorite tools.
http://www.aircraft-tool.com/shop/detai ... ID=A601KIT
I bought one of these and it is great too:
http://www.yardstore.com/browse.cfm/4,6738.html

Excellent pics, thanks Kip.

We riveted together the right hand tail skeleton. I used AN426 4-4's as I had a regular #30 dimple die I was willing to grind down. These are Adam's first bucked rivets.

Great idea! :)
Too late! I already ground. :(

Hi all,
I dimpled my aft spar channels, but when I went to dimple the mating holes in the aft part of the ribs they were too close to the radius. Looks like I will have to grind one of my dimple dies.

Mike,
I have never seen machine screws used with tinnermans. The 140 used them extensively but always with sheet metal screws.

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Quality Assurance

Re: Combination switch/fuses

Re: Approaching 1000 hours!

Re: 2013 American Sonex Association Fly Inn (CSV)

Re: Drilling inside elevator rib to horn

Re: 2013 American Sonex Association Fly Inn (CSV)

Re: Cotton Waiex 191 - N191YX

Re: Flush rivets for tail ribs at the root end

Flush rivets for tail ribs at the root end

Re: Tinnermans eating screws