Define corrosion and name two common forms that affect aircraft structures.

• A. Corrosion is deterioration of metal due to chemical/electrochemical reactions; forms include pitting and uniform corrosion.
• B. Corrosion is rust only; surface discoloration and oxidation.
• C. Corrosion is wear from friction; erosion and abrasion.
• D. Corrosion is magnetic interference; rust and chipping.

Answer: (A)