Might be worthwhile to review NTSB Part 830 to ensure clear understanding of the difference between an incident and an accident and what is required of an airman with respect to reporting. If you have additional questions, you could reach out to your local FAAST Team Safety Rep. You might be able to FOIA the FSDO’s investigation report as the form will clearly indicate what the classification of the event was. If you were not contactd by NTSB, chances are it is an incident.