As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 1727 - GSO - THE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF FROM GSO. THE AIRCRAFT WAS RETURNED TO GSO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND GEAR DOOR FORWARD TOP MOUNT BOLT ON LEFT GEAR BACKED OUT OF HOLE. THE BOLT, NUT, AND WASHER WERE INSTALLED. THE LANDING GEAR WAS SWUNG AND OPERATION CHECKED GOOD. (M)