Tuesday, September 23, 2008

Check-out The Progress

Yesterday I showed Josh working on the wing of the Honduran 206 and featured the arrival of the King Air. Well, if you compare the photos in yesterday's post with the photos in today's post, you'll see substantial progress on both airplanes.

Honduran 206

Since yesterday Josh has added substantial structure to the wing section. He is driving all kinds of beautiful rivets into new aluminum.

The rivets are all uniform with textbook "buck-tails" one after the other which means maximum strength and durability in the structure. The "buck-tail" of the rivet is what's left opposite the rivet head after the rivet is driven against the bucking bar. It's the pressure from the compressed and swollen rivet that holds the respective metal pieces together. It takes proper technique with both the rivet gun and with the bucking bar to create a good looking buck-tail. What is a textbook buck-tail? It's where the thickness is 1/2 the diameter of the rivet, and the width is 1 1/2 times the diameter. When you see a good one one, you know one. And Josh is driving a bunch of them.

GCI King Air

Yesterday the King Ai
r arrived and was still on its main landing gear. Today it's pretty well "opened up" and is up on jacks. The inspection is well underway.

The King Air up on jacks in Hangar C.

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