As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE/BUF - FLT 3180 - GEAR DOOR ON THE LEFT LANDING GEAR REMAINED OPEN AFTER GEAR WAS RETRACTED. AIRCRAFT RETURNED TO CLE. MAINTENANCE REMOVED AND REPLACED LEFT OUTBOARD MLG DOOR HANDLE HOLD-UP PIN IAW 52-81-00. OPS CHECKED DOORS IAW 52-00-00. AIRCRAFT RETURNED TO SERVICE. (X)