Stop informal testing
Do not shake or lean on a questionable rail to show movement. Keep people away from an affected area as appropriate and seek qualified review.
Photograph from a stable location
Show the whole stair or elevated area and visible connection details from a safe place. Avoid leaning over an edge for a close-up.
Gather existing reports
A prior inspection may identify a specific connection or assembly concern. Provide the full context, including limitations and any instructions.
Ask what is being repaired
A material patch, a new connection and a replacement assembly are different scopes. Clarify design, finish and review responsibilities before choosing a proposal.
Photos help start the review. Access, concealed conditions and required professional review can change the construction scope.