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In-service certification

Updated April 2019

Operators must maintain the skid plate assembly on their vehicles in accordance with best practice. These forms are used by a heavy vehicle operator to confirm a vehicle’s skid plate structural condition is within safe tolerances and must be presented at CoF inspection.

The inspection described in the form must have been done less than 30 days and fewer than 15,000km before the CoF inspection in which it is used. A technician must do the inspection. The form can be form signed by either a technician or the operator.


If you are wanting to find information and forms to apply to become an inspecting organisation or vehicle inspector for WoF or CoF, select one of the following:

Inspecting organisation application information and forms (WoF and CoF)

Vehicle inspector application information and forms (WoF and CoF)