As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG AIR/GND FAIL MESSAGE AFTER TAKE OFF GEAR WOLD NOT RETRACT. SERVICED NOSE LANDING GEAR STRUT. PERFORMED OPERATIONAL CHECK OF THE LANDING GEAR EXTENSION AND RETRACTION. OPS CHECK GOOD. PERFORMED MLH PROXIMITY SWITCH CLEARANCE GAP ADJUSTMENT CLEANED MLG PROXIMITY SWITCHES. PERFORMED LANDING GEAR EXTENSION AND RETRACTION ADJUSTMENT TEST. NO DEFECTS NOTED.