What was found
ON TAKEOFF, THE ACFT BLEW A TIRE, WHICH POTENTIALLY COULD HAVE CAUSED DAMAGE TO THE ACFT. ON APPROACH, THE CREW EXTENDED THE GEAR & ALL INDICATIONS SHOWED THAT THE GEAR WAS DOWN. ANOTHER ACFT THEN VISUALLY VERIFIED THAT THE LT MAIN GEAR WAS NOT EXTENDED DOWN. PERFORMED THE QRH CHECKLIST & WORKING THROUGH THE PROCEDURE TO LOWER THE GEAR. EMER HAS BEEN DECLARED. FOUND TREAD SEPARATED FROM NR 2 MLG TIRE, DOWN LOCK HARNESS DAMAGED & LT 2 PROX SENSOR DAMAGED. LG LEVER DISAGREE MSG & BRAKE CONTROL FAULT MSG WERE RECEIVED. R & R 1 & 2 MLG TIRE & WHEEL ASSEMBLIES IAW EMB. LOWER MLG LOCKING STAY WAS REPLACED. OPERATIONAL CHECKS & GEAR SWINGS WERE PERFORMED WITH NO ISSUES NOTED.