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Spar Repair

The main spanwise members of the wings, stabilizers, and other airfoils are spars, sometimes called beams. They can extend the airfoil's entire length or only a portion of the length. Spars are designed primarily to take the bending loads on wings or other airfoils.

Figure 2-14 shows spar repair by insertion. The spar consists of extruded capstrips, a sheet metal web or plate, and vertical angle stiffeners or reinforcements. Repairs on spars may not be permitted because they are such highly stressed members. The repair, if it is permitted, must be of the highest quality workmanship and in strict conformity with the instructions in the applicable technical manual.

Figure 2-14. Insertion Repair for a Spar.

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