What was found
(CAN) UNSAFE LT MAIN GEAR. THE CREW FOLLOWED THE CHECKLIST AND PERFORMED AN ALTERNATE GEAR EXTENSION, BUT STILL THEY GOT THE UNSAFE INDICATION. SO THEY PERFORMED A LOW ALTITUDE "FLYOVER" AND HAD THE TOWER CHECK IF THE GEAR IS FULLY EXTENDED. THE ACFT LANDED SAFELY, BUT HAS A COUPLE FAILURE MESSAGES, RED GEAR CAS, PROXIMITY SYS CAS, ETC.