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  • Chapter 4: Aircraft Metal Structural Repair › Repairability of Sheet Metal Structure › Structural Support During Repair

    Repairability of Sheet Metal Structure The following criteria can be used to help an aircraft technician decide upon the repairability of a sheet metal structure: • Type of damage. Figure 4-170. Repair of cracks by stop-drilling. Type of original ... material. Location of the damage. • Type of repair required. • Tools and equipment available to make the repair. The following methods, procedures, and materials are only typical and should not be used as the authority for a repair. Structural Support During…

  • Chapter 4: Aircraft Metal Structural Repair › Repairability of Sheet Metal Structure › Approval of Repair

    Approval of Repair Once the need for an aircraft repair has been established, Title 14 of the Code of Federal Regulations (14 CFR) defines the approval process. 14 CFR part 43, section 43.13(a) states that each person performing maintenance ... Administrator. AC 43.13-1 contains methods, techniques, and practices acceptable to the Administrator for the inspection and repair of nonpressurized areas of civil aircraft, only when there are no manufacturer repair or maintenance instructions. This data generally pertains to minor…

  • Chapter 4: Aircraft Metal Structural Repair › Typical Repairs for Aircraft Structures › Stringer Repair

    Stringer Repair The fuselage stringers extend from the nose of the aircraft to the tail, and the wing stringers extend from the fuselage to the wing tip. Surface control stringers usually extend the length of the control surface. The skin ... stringers. Stringers may be damaged by vibration, corrosion, or collision. Because stringers are made in many different shapes, repair procedures differ. The repair may require the use of preformed or extruded repair material, or it may require material formed…