What was found
PIT - FLT 45 - EN ROUTE PIT-LAX, AFTER TAKEOFF, THE LANDING GEAR WOULD NOT RETRACT. THE CREW CYCLED THE GEAR, BUT THE CONDITION REMAINED THE SAME. FLIGHT RETURNED TO FIELD IN PIT AND LANDED WITHOUT FURTHER INCIDENT. AN EMERGENCY WAS NOT DECLARED, HOWEVER, THE EQUIPMENT WAS CALLED OUT BY ATC. (M)