43.13-1B - Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair [Large AC. This includes Change 1.] Date Issued September 08, 1998 Responsible Office AFS-350 Description.

Key PointsThree things are necessary for corrosion to occur: an electrolyte, an exposed metal surface, and an electron acceptor. Corrosion can be prevented by removing one of these conditions. Coating a metal surface with paint or enamel provides a barrier between the metal and the moisture in the environment.

Clean and strip. Remove corrosion. Neutralize remaining pits and crevices. Restore films and paint.

Advisory Circulars (ACs) provide a single, uniform, agency-wide system that the FAA uses to deliver advisory (non-regulatory) material to the aviation community. Can be found on the FAA's website at http://www.faa.gov/regulations_policies/advisory_circulars/

Alloy Steel Parts. Do not weld alloy steel parts such as aircraft bolts, turnbuckle ends, etc., which have been heat treated to improve their mechanical properties.

What metals can be sandblasted to remove corrosion? Titanium alloys and high tensile strength steel can be sandblasted to prevent corrosion.

This advisory circular (AC) is a summary of the current available data regarding identification and treatment of corrosive attack on aircraft structures and engine materials. Corrosion inspection frequency, corrosion identification, and especially corrosion treatment continues to be the responsibility of the operator.

AC 43.13-1B - Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair [Large AC. This includes Change 1.]

AC 43.13-1B says: "This advisory circular (AC) pertains to aircraft repairs and inspections. The repair data in this AC is for minor repairs to non-pressurized areas of an aircraft. ... The methods, techniques, and practices outlined in this advisory circular are considered acceptable to the FAA."