What was found
PIT - FLT 449 - DURING CRUISE, THE LEFT GEAR UNSAFE LIGHT ILLUMINATED. THE AIRCRAFT DIVERTED TO PIT AND LANDED WITHOUT INCIDENT. MAINTENANCE ADJUSTED THE LEFT MAIN LANDING GEAR DOOR HUBCAP BUMPER SHIMS. THE GEAR RETRACTION, EXTENSION, AND ALTERNATE EXTENSION WERE CHECKED AND FOUND NORMAL. (X)