I'm not sure what you are asking. Tacking on to Bruce's questions...
• Are you talking about a motor vehicle action which occurred after the BasicMed CMEC was filled out and signed off?
• Are you talking about a motor vehicle action which occurred before the CMEC and was not disclosed in response to question 18v?
• Was the motor action reported as required under 61.15?
See also my response to Bruce above.
Pilot is fully compliant with 61.15. No grounds for pilot cert action.
CMEC form/timing: Let's say pilot meets baseline BM eligibility requirements. Does not hold current med cert (expired naturally before MVA). No history of med cert suspension/revocation or app denial/deferral. MVA happens before pilot completes CMEC with state-licensed physician. DL reinstated.
Pilot completes all questions truthfully on CMEC. Pilot has no additional MVA's, medical history/diagnosis, etc. within previous 2 years. State-licensed physician is satisfied pilot is not substance dependent and signs CMEC form w.r.t. CFR 68.9 substance dependence definition + CMEC form instructions.
Then pilot completes BM online course. FAA sees NDR match. And that MVA was > 2 years previously. FAA demands "additional info?" And...?
1. Verifies pilot basic eligibility for BM?
-Compliance with 60 day MVA reporting requirements
-Requests proof of current/valid DL?
-Requests CMEC to verify truthful answers and state-licensed physician sign-off? Or...
2. Puts BM pilot through same "grind" as Part 67 applicant/med cert holder?
-Requests same reports, records, statement(s) etc. as Part 67 pilot?
-Possible additional evals (out-of-pocket for pilot)?
-Certified letters, internal policy/processes, delays? Or...?
1 + 2 (all above)? In other words, even under BM it gets kind of tangly.