What was found
PIT - FLT 1637 - ON TAKEOFF, THE LEFT MAIN OUTBOARD TIRE BLEW. MOST OF THE TIRE WAS INGESTED INTO THE LEFT ENGINE. ON APPROACH BACK TO PIT, THE CREW RECEIVED A GEAR UNSAFE LIGHT. THE CAPTAIN DID A MISSED APPROACH AND CYCLED THE GEAR. WITH THE UNSAFE LIGHT STILL ON, CAPTAIN DID A FLYBY OF THE TOWER TO VERIFY THAT THE GEAR WAS DOWN. FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NR 2 TIRE AND WHEEL ASSEMBLY (P/N 3910063507) DUE TO A BLOWN CAP. SPIN CHECK WAS GOOD. (M)