As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH, WHEN LANDING GEAR HANDLE MOVED TO EXTEND, RECEIVED ALL UNSAFE GEAR INDICATIONS ON BOTH LANDING GEAR INDICATORS AND CONFIG PAGE. RECYCLED GEAR AND ALL INDICATIONS WERE NORMAL. REPLACED PROXIMITY SWITCH ELECTRONICS UNIT AND TESTED GOOD IAW MD 10-30 AMM 31-71-01-2.