What was found
LG AIR /GND FAIL CAUTION MSG WHILE CLIMBING THROUGH FL 300 "TRANSFERRED TO NRWC 646-MIA-02812". FOLLOWING FIM TASK 32-63-00-810-806A, LANDING GEAR LEFT WOW PROX SW FAIL MESSAGE ON CMC, REMOVED AND REPLACED LEFT MLG DOWN LOCK PROXIMITY SW POSITION B, OPERATIONAL TEST SATISFACTORY ALL IAW AMM 32-61-02-400-801A.