As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED- LOWERED LANDING GEAR FOR CCR. GOT EICAS MESSAGE “LG AIR/GND FAIL”. ULTIMATELY, WRH HAS LANDING DISTANCE MULTIPLIED BY 1.7. CCR RUNWAYS TOO SHORT. DIVERTED TO OAK. CORR ACTION- PERFORM TEST AND CLEAN ALL CANNON PLUG. OPS CHECK OK THIS CLEARS THE SNAG.