What was found
LANDING GEAR FAIL UNABLE TO RETRACT. EMERGENCY DECLARED-LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF IN QV. AIR/GROUND FAIL EICAS MESSAGE, COMPLIED WITH QRH. DEVERTED TO SGF. LANDED AT 43,500 LBS, SOFT TOUCHDOWN. COMPLIED W/OVERWEIGHT LANDING PROCEDURES.-C/A-UPON INSP FOUND LG AIR/GND - PROX SW FAIL MSG ON CMC. PERFORMED PROXIMITY SWITCH FNC - ALTERNATIVE PROCEDURE WITH BREAK OUT BOX PER AMM 32-63-05-700-802-A. FNC GOOD. PERFORMED MULTIPLE LANDING GEAR EXTENSION AND RETRACTION OPC PER AMM 32-30-00-700-801-A. OPC GOOD. CND FAULT.