As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STICK SHAKER INOP DURING ROTARY TEST. A LIGHT TAP ON THE YOKE CAUSED A SPARK AND A SMALL PUFF OF SMOKE. AOA CIRCUIT BREAKER POPPED. FOUND WIRE BROKEN ON CONNECTOR. REMOVED AND REPLACED CONNECTOR WITH A NEW CONNECTOR . STICK SHAKER OPS CHECKS GOOD IAW M/M AND WIRE DIAGRAM MANUAL.