FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 11. Aircraft Electrical Systems | 15. Grounding and Bonding | 11-190. Creepage Distance
9/8/98
TABLE 11-15. Plate nut bonding or grounding to flat surface.
AC 43.13-1B
Structure
Aluminum Alloys
Aluminum Terminal and Jumper
Screw or bolt
and nut plate
Rivet
Lockwasher
Cadmium Plated
Aluminum Alloy
Cadmium Plated
Steel
Steel
Washer A
Cadmium Plated
Steel or
Aluminum
Washer B
None
Magnesium Alloys
Cadmium Plated
Steel
Aluminum Alloy
Cadmium Plated
Steel
Cadmium Plated
Steel or
Aluminum
None or Mag
nesium Alloy
Steel, Cadmium
Plated
Cadmium Plated
Steel
Corrosion
Resisting Steel
Cadmium Plated
Steel
Cadmium Plated
Steel or
Aluminum
None
Steel, Corrosion Re-
sisting
Aluminum Alloys
Magnesium Alloys1
Corrosion Resisting
Corrosion
Cadmium Plated
Steel or Cadmium
Resisting Steel
Steel
Plated Steel
Tinned Copper Terminal and Jumper
Cadmium Plated
Aluminum Alloy
Cadmium Plated
Steel
Steel
Cadmium Plated
Steel or
Aluminum
Cadmium Plated
Steel
Cadmium
Plated Steel
Aluminum2
Alloy
Steel, Cadmium
Plated
Cadmium Plated
Steel
Corrosion
Resisting Steel
Cadmium Plated
Steel
Cadmium Plated
Steel
None
Steel, Corrosion
Corrosion Resisting
Corrosion
Cadmium Plated
Cadmium Plated
Resisting
Steel
Resisting Steel
Steel
Steel
1 Avoid connecting copper to magnesium.
2.Use washers having a conductive finished treated to prevent corrosion, suggest AN960JD10L
None
Par 11-190
Page 11-77