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3 Cards in this Set
- Front
- Back
Are the mineral streaks in a piece of structural aircraft wood reason for rejecting the wood? |
No, if there is no evidence of decay in the wood |
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Is a hard knot, 1/2 inch in diameter allowed if it is the web of a wing spar? |
No, 3/8 inch diameter is the maximum allowable knot, and it must meet severe restrictions. |
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Which wood is more inclined to warp, flat grain or vertical grain? |
Flat grain |