As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 2592 - THE CREW REPORTED A UNUSUAL LOAD SOUND FROM UNDER THE COCKPIT FLOOR ONLY IN CLIMB AND CRUISE. ALSO REPORTED A SLIGHT VIBRATION OF YOLK AND RUDDER PEDALS. MAINTENANCE INSPECTED AND REPLACED THE NOSE LANDING GEAR UPLOCK BOX "B"PROXIMITY SWITCH. OPERATIONAL CHECKS WERE GOOD.