The question must require specialist knowledge

An expert establishes technical and factual circumstances but does not decide questions of guilt or legal liability.

Separate the parts

First formulate questions for each specialty, then a joint question that depends on the combined results.

Do not suggest the answer

It is more appropriate to ask about the presence of indicators, the nature of a defect, its technical cause and the connection between events.

Check the materials

Each question must be supported by an object, documents or digital data.

The specific expert team is determined by the questions, objects and case documents.