As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UNCOMMANDED GEAR EXTENSION: DURING DESCENT AT SPEED 275 WE COULD FEEL THAT THE GEAR / GEAR DOOR WENT DOWN MOMENTARILY WITH AN INTERMITTENT UNSAFE INDICATION. REDUSED SPEED AND LANDED WITHOUT ANY FURTHER INDICATIONS. INVESTIGATION / ACTION PROXIMITY SENSOR ELECTRONIC UNIT REPLACED ACCORDING AMM 32-61-01.