As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A NORMAL FLIGHT AND LANDING PROCEDURE, PLACED THE GEAR SWITCH IN THE DOWN POSITION WITH NO RESPONSE. TRIED THIS SEVERAL TIMES STILL NO RESPONSE. DID A MANUAL DROP OF THE GEAR AND RECEIVED GREEN GEAR DOWN AND LOCKED LIGHTS. SET THE UNIT BACK TO COMPOSITE DESIGN. COMPOSITE DESIGN FOUND A FAILED RELAY REASON NOT KNOWN. (EA17200407757)