Leading Edges and Windshield surround – Polished surfaces Additional Protection

Effectivity: Global 7500

ATA 54, 55, 56 and 57

A saline environment causes the corrosion of aluminum creating aluminum oxide. The salt does not directly attack the aluminum but causes an electrochemical attack, like a catalyst, that results in the corrosion. This is the white deposit that is found on aluminum. The corrosion rate depends on the temperature, the concentration of the salt, and the humidity.

For aircraft operating in salty air environments or other harsh environments, it is recommended to apply protective wax right after surfaces are polished to increase the level of corrosion protection per the following AMP tasks:

BD700-A-J54-50-00-00AAA-256A-A, Pylon

BD700-A-J55-10-00-00AAA-256A-A, HS

BD700-A-J55-30-00-00AAA-256A-A, VS

BD700-A-J56-00-00-00AAA-256A-A, Windshield

BD700-A-J57-40-00-00AAA-256A-A, Wing

Recommended protection:

Consumable reference and product name can be found in the Aircraft Structural Repair Publication (ASRP) BD700-A-J51-31-00-00AAA-070A-A and product name:

05-528-002, X3500-18 Kit (brightwork, for bare metal surfaces), Xzilon3

POLISHED SURFACE LOCATIONS :