As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING APPROACH MLG FAILED TO EXTEND WITH GEAR SELECTED DOWN. CREW COMPLIED WITH QRH, GEAR EXTENDED AND LOCKED, FOLLOWING GO AROUND, ACFT LANDED. MAINTENANCE FOUND LOOSE MLG SELECTOR VALVE CONNECTOR PLUG. CONNECTOR PLUG RESECURED AND GEAR RETRACTION SYS FUNCTIONALLY CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.