• Procedures for conducting an accident investigation are extensive, but may not apply in all circumstances due to the variety of accidents and diversity of operations.

These recommendations present a suggested direction; they are not mandatory. Because of the variety of accidents investigated and the diversity of operations, no attempt is made to provide a format for use in all situations. Rather, these guidelines represent an example of an effective investigation procedure that will help to:

• Identify and collect evidence,
• Photograph and sketch the accident scene,
• Write notes,
• Interview observers, and
• Identify contributing factors.