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  • Chapter 8: Cleaning & Corrosion Control › Corrosion Prone Areas › Wheel Well and Landing Gear

    maintain. A partially applied preservative tends to mask corrosion rather than prevent it. Due to heat generated by braking action, preservatives cannot be used on some main landing gear wheels. During inspection of this area, pay particular attention ... entrapped water or its effects 2. Exposed rigid tubing, especially at B-nuts and ferrules, under clamps and tubing identification tapes 3. Exposed position indicator switches and other electrical equipment 4. Crevices between stiffeners, ribs, and lower skin surfaces that…

  • Chapter 7: Aircraft Materials, Hardware, & Processes › Aircraft Metals › Identification and Coding

    Identification and Coding Bolts are manufactured in many shapes and varieties. A clear-cut method of classification is difficult. The shape of the head, method of securing, material used in fabrication, or the expected usage can identify bolts. AN-type ... asterisk or a single raised dash. AN aluminum-alloy bolts are marked with two raised dashes to indicate corrosion-resistant steel. • Additional information, such as bolt diameter, bolt length, and grip length, may be obtained from the bolt part number…

  • Chapter 7: Aircraft Materials, Hardware, & Processes › Aircraft Metals › Repair of Damaged Holes with Acres Fastener Sleeves

    manufacturer of the aircraft, aircraft engine, or aircraft component prior to repair have damaged holes with Acres sleeves. Identification The sleeve is identified by a standard code number that represents the type and style of sleeve, a material code ... Hole Preparation Refer to Figure 7-67 for drill number for standard or close fit holes. Inspect hole after drilling to assure all corrosion is removed before installing the sleeve. The hole must also be the correct shape and free…