As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERMITTENT STICK SHAKER WARNING AIRSPEED NORMAL. EMERGENCY DECLARED AND FLIGHT RETURNED WITHOUT INCIDENT. AIRCRAFT WAS GROUNDED. MAINTNENANCE ACCOMPLISHED MACH AIRSPEED WARNING SYSTEM NR 1 AND 2 IAW MM 34-16-00. UNABLE TO DUPLICATE FAULT. REPLACED THE NR 1 STALL MANAGEMENT YAW DAMPER IAW MM 27-32-42 AND REPLACED LEFT ANGLE OF ATTACK SENSOR IAW MM 34-21-05 AND PERFORMED SATISFACTORY OPS CHECK.