As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: UPON DEPARTURE IN RIGHT TURN, AIRCRAFT RUDDER VIBRATION FELT. EMERGENCY DECLARED; FLIGHT RETURNED TO SRQ LANDING SAFELY. **SUPPLEMENTAL REPORT FOR AALA202303278855: MAINTENANCE WAS UNABLE TO DUPLICATE ISSUE ON THE GROUND. SUSPECT FAULTY MAIN RUDDER POWER CONTROL UNIT (PCU). PCU REPLACED PER JOB CARD 08L30027004. ACCOMPLISHED SATISFACTORY RIGGING AND OPERATIONAL CHECK.** (CLOSED)