As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GEAR DOWN LIGHT CHECK PRESSED LIGHTS TEST SWITCH AND ALL LIGHT STUCK IN THE TEST MODE. UNABLE TO CHANGE RADIO FRQ'S ETC. AFTER LANDING, WE COULD CYCLE THE TEST BUTTON SEVERAL TIMES AND WERE ABLE TO EXTINGUISH THE TEST LIGHTS FUNCTION. ACCOMPLISHED TEST OF THE TEST SWITCH IAW AMM 33-16-00-5-99. NO DISCREPANCY FOUND. OK FOR SERVICE.