Does my aviation insurance policy require me to comply with a Service Bulletin?
I don't know of any language in a policy that requires the owner to comply with a service bulletin. The policies will have language about having an aircraft that is in "current airworthiness". That brings up the question, "What is required to make the plane airworthy?"
I personally think a SB is a recommendation and not required for Part 91 operations. I do think it is required for Part 135 operations. Also, I believe that if it is required by the manufacturer that you meet the SB then, I suppose, it would make it indirectly required.
But, don't take my word on it. I would ask your mechanic or the FSDO office in your areaLabels: aircraft maintenance, aviation insurance, FAA, Part 135, Part 91, service bulletin