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SGS 2-33 Canopy movement limiting cable failed... ensueing damage



 
 
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Old April 28th 13, 02:23 PM posted to rec.aviation.soaring
son_of_flubber
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Default SGS 2-33 Canopy movement limiting cable failed... ensueing damage

This is probably common knowledge for some, but it caught my club by surprise. It is easy prevent this damage by replacing the canopy cable before it fails.

The cable that limits the canopy movement when the canopy is open failed. The canopy flopped over and slammed into the horizontal tube that runs front to back in the fuselage, bending it in several inches. The tube pivoted on the vertical member between the front and back seat, thus bending the same tube outward. Standing at the nose and sighting down the side of the fuselage, the tube is now S-shaped.

The responsible powers are consulting the knowledgeable experts, but I'd like to hear the range of expert and inexpert opinions offered on RAS. Surely this has happened to someone else before. How was the repair made?

I have no expert knowledge of aircraft structure, but the weld of the horizontal to vertical tube got a weird twist. The crude and direct approach of "bending back the tube" will stress the welds again and double any damage. The S-shape tube has lost much of it's strength in compression. Redundant parts of the tube structure are now picking up more load.
 




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