| 1. | The cockpit and passenger cabin were separated by the main wing spar.
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| 2. | Wing spars and struts were made of steel tubing, with duralumin ribs.
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| 3. | This tail boom is stiffened with bracing wires to the wing spars.
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| 4. | To make matters worse, the F-84F utilized press-forged wing spars and ribs.
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| 5. | The accident was caused by a fatigue crack in a wing spar.
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| 6. | The entire plane was fabric covered with wooden wing spars and ribs.
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| 7. | Messier oleo strut landing legs were mounted on the wing spar.
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| 8. | Aircraft pieces, wing spars, pieces of aircraft skin, wiring, and clothing.
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| 9. | Structural metal fatigue was the problem in a major wing spar.
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| 10. | Every third wing spar on the F-22 is made of titanium.
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