As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"LG AIR/GND FAIL" EICAS MESSAGE FROM GEAR RETRACTION UNTIL PARKING. NORMAL BRAKING ON TOUCHDOWN NORMAL SPOILER DEPLOY-C/A-PERFORMED TROUBLESHOOTING PER FIM 32-63-00-810-801A. FOUND LT MLG NR 1 WOW SWITCH TO BE UNPLUGGED. PLUGGED IN NR 1 WOW SWITCH AND RETAPED PER ETN-EM-32-173. OPC GOOD.