As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMPULSE COUPLING PAWL DETACHED DURING ENGINE START ON INITIAL TEST CELL RUN. ENGINE NEVER STARTED. TROUBLESHOOTING REVEALED A PROBLEM WITH IMPULSE COUPLING. MAGNETO REMOVED AND VISUAL INSPECTION REVEALED THE PIVOT PIN FOR IMPULSE PAWL SHEARED.