What was found
PILOT REPORTED AFTER DEPARTURE FROM STL GEAR INDICATION RED AFTER SELECTING GEAR UP, RETURN TO STL THREE GREEN AFTER SELECTING GEAR DOWN, WILL UPDATE AFTER MAINTENANCE. AFTER NUMEROUS ATTEMPTED FLIGHTS THE AIRCRAFT WAS RELOCATED VIA SPECIAL FLIGHT PERMIT TO ANOTHER MAINTENANCE FACILITY, R & R LT MLG UPLOCK ASSY AND ADJUSTED STRIKER PLATE, SYSTEM OPS CHECK GOOD, NO FURTHER PROBLEM ON SUBSEQUENT FLIGHTS.