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8450
Which aircraft record entry is the best description of the replacement of several damaged heli coils in a casting?
| | A) Eight 1/4 ( 20 inch standard heli-coils were replaced. The damaged inserts were extracted, the tapped holes gaged, then new inserts installed, and tangs removed. |
| | B) Eight 1/4 ( 20 inch standard heli-coils were installed in place of damaged ones. |
| | C) Eight 1/4 ( 20 inch standard heli-coil inserts were repaired by replacing the damaged inserts with a lock type insert, after the tapped holes were checked for corrosion. |
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