Which statement is true about splices in a spar?

Which statement is true about splices in a spar?

• A. Splices are prohibited under an attachment fitting for the wing root, landing gear, engine-mount, lift, or inter-plane strut
• B. Splices are prohibited at the wingtips
• C. Splices are prohibited near the tail
• D. Splices are prohibited at the center of the wing

Answer: (A)

The main idea is that where a wing spar is spliced matters because of how loads are carried through the wing structure. A splice disrupts the continuity of the spar, turning it into a potential weak point, especially where loads are transmitted through attachments. Under attachment fittings for the wing root, landing gear, engine mount, lift mechanisms, or inter-plane struts, the spar experiences high bending, shear, and fatigue stresses. Placing a splice in these critical regions would compromise the load path and raise the risk of structural failure, so splices are prohibited there. In other parts of the wing, away from these fittings, splices may be allowed if they’re done according to approved repair data and proper reinforcement. The other locations listed in the options aren’t the standard restrictions for spar splices in this context.

The main idea is that where a wing spar is spliced matters because of how loads are carried through the wing structure. A splice disrupts the continuity of the spar, turning it into a potential weak point, especially where loads are transmitted through attachments. Under attachment fittings for the wing root, landing gear, engine mount, lift mechanisms, or inter-plane struts, the spar experiences high bending, shear, and fatigue stresses. Placing a splice in these critical regions would compromise the load path and raise the risk of structural failure, so splices are prohibited there. In other parts of the wing, away from these fittings, splices may be allowed if they’re done according to approved repair data and proper reinforcement. The other locations listed in the options aren’t the standard restrictions for spar splices in this context.