As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR HANDLE FLASHED RED FOLLOWED BY LN3 GEAR CONTROL C/B POPPING. FOLLOWED ABNORMAL GEAR EXT CHECKLIST W/ONE RESET OF C/B GEAR EXTENDED NORMALLY AND LANDING GEAR CONTROL C/B POPPED AGAIN. REMOVED BAD SWITCH AND INSTALLED NEW PROXY SWITCH AT LT MAIN LANDING GEAR. COMPLIED WITH FUNCTION TEST OF MLG EXTENSION / RETRACTION IAW FALCON 2000 MAINTENANCE MANUAL 32-600 AND 32-300.