As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT FLIGHT LEVEL 220, FLIGHT CREW HEARD A LOUD BANG AND EXPERIENCED SIGNIFICANT AIRFRAME VIBRATION. THE A/C CLIMBED APPROXIMATELY 200FT BEFORE CREW WERE ABLE TO STOP ASCENT. EMERGENCY DECLARED, UNSCHEDULED LANDING CARRIED OUT. MAINTENANCE CREW FOUND THE LT ELEVATOR TRIM CONTROL TUBE FAILED.