As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT EXTEND, GOT THREE RED LIGHTS. CYCLED HANDLE NUMEROUS TIMES. PERFORMED ALTERNATE GEAR EXTENSION, LANDED NORMAL. RESEATED CONNECTOR ON LANDING GEAR SELECTOR. TIGHTENED LOOSE WIRE ON LANDING GEAR INHIBIT SWITCH AND CONFIRMED POWER TO LANDING GEAR SELECT HANDLE.