What was found
CREW REPORTED, LANGING GEAR AIR/GROUND FAILED AFTER TAKEOFF MAINTENANCE REMOVED AND REPLACED THE LGEU DID NOT FIX PROBLEM, INSPECTED AIR/GROUND PROXIMITY SWITCHES AND HARNESS FOR CONDITION AND SECURITY, NO DEFECTS NOTED, PERFORMED LANDING GEAR RETRACTION AND EXTENSION IAW EMB145 MM 32-30-00, NO DEFECTS NOTED; SERVICED LT MAIN LANDING GEAR SHOCK ABSORBER IAW EMB145 MM NR 12-13-05 IAW IAH ENGINEERING AND SERVICED NOSE LANDING GEAR SHOCK ABSORBER IAW MM NR 12-13-04. AFTER RETRACTION AND EXTENSION TEST ON JACKS, TEST FLEW AC SATISFACTORILY. AIRCRAFT RETURNED TO SERVICE.